Altium Designer Documentation

Public Release Notes for Altium Designer

Created: February 13, 2020 | Updated: July 28, 2020
Now reading version 20.1. For the latest, read: Public Release Notes for version 23
Applies to Altium Designer version: 20.1

The following sections list the release notes for publicly released versions of Altium Designer 20.1.

For a summary of new features and enhancements in Altium Designer 20.1, see New in Altium Designer.

Version 20.1.14 (Update 5)

Build: 287 Date: 20 July 2020


The Delay values for xSignals in the PCB-xSignals panel were incorrect when the PCB was opened.



When the Thickness value for copper layers were changed in the Layer Stack Manager, the new values were not saved if the Weight value was not also changed. (BC:14005)


Snap to grid option did not function as intended when dragging. (BC:8351)


Data Management
35158 'Revision ID' field did not correspond to the value of the 'Item ID' field when viewing Revision properties in the Explorer panel.

'Specified file already exists' error message during releasing of Project Template.

39098 Hidden Component Templates prevented the use of naming schema of Folders in the Explorer panel.

Lifecycle state of components did not update automatically after updating in the Explorer panel.

39323 "Server SSL certificate is issued by unknown authority" error message upon the attempt to open the Components folder in Explorer panel.
39391 When the Operations > Export Grid command was used in the Explorer panel, the RevisionID and Revision were not properly exported.

Version 20.1.12 (Update 4)

Build: 249 Date: 29 June 2020


SVG graphics placed on a Schematic document were not present in the generated output PDF. (BC:13351)

38871 Messages panel did not automatically open after compiling a project. (BC:13313)
38872 ERC used logical designators instead of physical designators, resulting in Component error messages.
38955 Violation markers did not appear on placed components if a new Schematic document was saved directly after creation.


Snapping to Via did not work properly in the PCB Editor.


'Change component type' command is now available from the context menu of the Library Migrator.

38973 Connectivity monitor caused false reconnects resulting in interrupted user experience.
39063 Exception error upon starting software.

Data Management

Error when scrolling through Part Requests in Explorer panel.

38589 Improved Library Migrator by adding 'Change Component Type', 'Exclude from Migration', and 'Add Library' commands to the right-click context menu.
38812 "Search server components error" message appeared after attempting Integrated Library migration.
39018 Properties panel did not display the current revision status of a Component by default and did not refresh automatically.

Version 20.1.11 (Update 3)

Build: 218 Date: 3 June 2020


Vertical scrolling and auto-panning did not function properly in a Schematic library document after attempting to place a pin object.

37801 No import performance occurred when attempting to import a DFX/DWG file.
37917 Unconnected pins ignored inherited net classes. (BC:13238)
38149 When connected to a server, a crash occurred when changes were made in the schematic editor.
38242 Graphical editing keyboard shortcuts closed when attempting to move Schematic objects, causing data loss in objects if the F1 key was used during dragging. (BC:13188)
38357 File extensions in *.PrjPCBStructure of certain schematics were removed upon saving.
38488 Crash occurred when opening some Schematic Library documents. (BC:13522)
38536 The newest revision of a Schematic template was not immediately available for use upon saving. (BC:13578)
38575 Diagonal wires caused improper connectivity and shortened nets when updating the design. (BC:13597)

Certain edit operations in the Schematic caused a disconnect of power ports from sheet entries.

38889 Clicking the parameter visibility icon in the Properties panel did not change the parameter visibility.


Project Releaser displayed incorrectly auto-generated naming formatting for PCB Assembly Variants.


ECO failure when importing changes from (or silent crash when inserting) a PCB into a Multi-board Assembly document that contained a specific board cutout. (BC:13054)

38404 Colors configured in the PCB Editor- Layer Colors Preferences page were not saved.
38444 Error message after generating an ODB++ file from an embedded board array when using mm units then importing the file into CAMtastic.
38465 Error occurred when trying to view the Layer Stack Manager.


Incorrectly overlaid components for different variants.

38505 Special strings were not recognized on Draftsman outputs for ‘No Variant’ Assembly and Fabrications.


Select dialogs and panels experienced issues in certain UI themes and high dpi monitors.

38059 Error in managed components caused empty designator fields and batch settings to not function.
38503 Added ability for unmanaged templates to be used while connected to Altium 365.

Server configurations defined in preferences were not applied in the software.

Data Management

Freeze occurred when entering an incorrect setting on the Item Naming tab of the Project Release Options dialog.

35614 Components placed from the Components and Explorer panel did not contain information about the simulation model. (BC:12770)
36200 Column sorting did not work properly in Components panel. (BC:12505)
36601 Exception error when scrolling through Explorer panel after adding columns. (BC:12728)
36873 Improved performance when releasing with a newly-created or edited footprint.
36874 Improved performance when using the Components panel to search for a replacement component in a Schematic.
36936 Cloned projects from the Explorer panel were incorrectly saved to the default path after specifying a local, custom path. (BC:12904)
37210 Improved performance when searching in the Manufacturer Part Search panel.
37255 Added confirmation pop-up dialog for dragging and dropping of folders in the Explorer panel to prevent accidental broken folder structure. (BC:11087BC:12993)
37511 Improved Altium 365 performance regarding sharing permissions.
37964 Inability to place a component from the 'File-Based Libraries Search' option if 'No' was selected when asked if you would like to install the library that contained your selected component.
38137 Error occurred when saving .Cmplib file after adding part choices.
38168 Template parameter values were not applied to managed templates.
38187 'Category' and 'Type' source library parameters were not recognized by the Library Migrator when migrating to the server.
38194 Project templates shown in the Explorer panel did not appear in the Create Project dialog.
38196 Existing project files that were added to a managed template item did not appear after releasing the template to the server.
38333 Added the capability to save the 'All' library category status in the Components panel.
38384 The Components panel performance has been optimized to not generate empty conditions when none of the text in the search request string matches.
38522 Error occurred during component releasing.
38573 Where-used tab of the Explorer panel incorrectly displayed the first revision, not the latest.
38673 Exception error after attempted PCB update when Library contained a large number of Footprints.

Crash or freeze while dynamic compilation collected data for validation.

37402 Import Wizard could not reestablish Component Links when adding Schematic and PCB docs from OrCAD and PADs to the same project.
37471  The software did not import Allegro projects with versions 17.3 and 17.4.

Version 20.1.10 (Update 2)

Build: 176 Date: 26 May 2020

38353 Missing duplicate designator message in the Messages panel.
38714 Parameter value incorrectly displayed in place of the parameter name.
38499 The software could freeze when changing PCB Editor preferences.
38737 Regions did not account for ODB++ fabrication output when generated for masks layer.
37877 Polygon pour cutouts did not display after PDF output.
38432 Transmission lines were sometimes missing when a substack was added to the Layer Stack Manager.
37915 Crash after connecting or reconnecting to a Workspace.
38237 Last connected workspace not being restored when restarting software.
38371 Improved performance time when selecting one by one component in a schematic. 
38578 Crash when closing the software after loading certain preferences. (BC:13573)
Data Management
37570 'Project' folder changed to a 'Generic' folder after viewing the Project folder's permissions.
38141 Draftsman documents did not open when accessed from a project template. (BC:13525)
38170 Fixed regression that caused no part request folder to appear in the Explorer panel after signing into the workspace.
38202 Component Revision ID parameter value was missing in the Explorer panel. 
38258 'Navigate to' option in the Explorer panel stated 'There are no items in this folder', even though the item existed.
38378 Error when releasing an updated component.
38396 Crash when adding part choices in the Components panel.
38431 Parameter and Comment font color defined in a library was not used when placing components on a schematic.
38475 Sorting by the Values column of the Explorer panel was incorrect.
38535 Error during Integrated Library compilation, resulting in an unsuccessful library creation. (BC:13580)
38639 Error when releasing a component after adding a new model.
38650 Exception error when releasing an updated component in the Single Component Editor.
38671 'Object accessed after being destroyed' error appeared when closing documents that have been generated by the project releaser.
38736 Adding object parameters for a Device Sheet, Sheet Symbol, Pin, or Port caused a crash.
37907 Exception error when the project file is modified outside of the software and a BOM document was open


Version 20.1.8 (Update 1)

Build: 145 Date: 14 May 2020

37730 Fixed issue that caused Altium Designer to reconnect to a server every few minutes, which rendered UI functionality to be locked until the reconnection was completed.
38372 Fixed regression that caused an error to occur when using the 'Show in Explorer' command.
38448 Resolved an issue with updating index data after moving an Item in the Vault Explorer Classic View.
38469 Fixed issue that caused a crash after validating the project then moving a component.

Data Management
38471 Fixed an issue that caused the name of the saved copy of the PCB or SCH document to display as the tab rather than its original name.

Version 20.1.7

Build: 139 Date: 1 May 2020

32458 Fixed issue that caused a crash when Ctrl+W was used twice.
34880 Fixed issue that caused suppressed violations to not be reported if the 'Report Suppressed Violations in Message Panel' option was enabled in the Messages panel. (BC:12706)
35644 Fixed issue that caused schematic to crash after extended periods of time.
35858 Added ability to add the Creepage Distance design rule to a Schematic document.
36001 Fixed issue that caused Net Labels to become misaligned from the grid when dragging wires.
36002 Fixed regression that caused font size to change during inline editing in the Text object. (BC:12873)
36055 Fixed issue that caused alignment of negation of pin names to display incorrectly for specific fonts. (BC:12991)
36081 Fixed regression that caused transparent geometric shapes to be printed as solid, rather than transparent shapes, when exported to PDF file format. (BC:12555 & BC:13051)
36082 Fixed issue that caused the Designator/Comment properties to not automatically update the schematic library document after editing the properties in the Properties panel.
36109 Updated the dynamic compiler to better handle project compilation and memory management when multiple projects are opened.
36123 Fixed regression that caused transparency levels to display incorrectly.
36168 Fixed issue that caused text and text frames to not center justify when there are tabs in the text.
36264 Fixed an issue where the Compiler was incorrectly reporting duplicate net names during Validation.
36267 Fixed an issue with the schematic Annotate dialog, where the right-click Order By Project Order command did not work. (BC:12964)
36445 Fixed issue where the Print Selection control in the Print Configuration resulted in a blank document.
36482 Fixed regression that caused validation errors to occur when using repeat functions and differential pair buses on Schematic documents. (BC:12468, BC:12889)
36563 Fixed issue that caused harnesses with indirect net labeling to generate the wrong connectivity.
36585 Fixed issue that caused IEEE symbols to render improperly.
36603 Fixed an issue whereby a Device Sheet would remain in the project structure, even though the corresponding Device Sheet Symbol had been removed from the relevant schematic sheet.
36735 Fixed issue that caused empty net classes when running an ECO with a 'Parameter Set' directive assigned to a port connected to a bus or harness.
36750 Fixed issues that caused stabalizaton errors to occur in Schematic documents.
36769 Fixed issue that caused the $SheetDesignator keyword format to not be recognized during Multi-Channel configuration, causing incorrect interpretation. (BC:12796)
36797 Fixed an issue where the $SheetNumber keyword was not being used in the designator numbering during board level annotation. (BC:12710)
36895 Fixed issue that caused the dashed line for a Blanket to have square instead of rounded edges in the PDF output. (BC:12677)
37026 Fixed an issue that caused incorrect text justification in templates. (BC:12564)
37044 Fixed issue that caused incorrect, duplicate nets error messages to appear when the name of a Sheet Entry was changed.
37075 Fixed issue that caused unused managed schematic sheets to not be removed from the project after removing them.
37155 Fixed regression that caused the software to not detect output port to output port violations that were specified in the Connection Matrix. (BC:13074)
37215 Fixed regression that caused the Smart PDF dialog to hang and consume large quantities of CPU power when only some, rather than all, Schematic files were chosen to be generated.
37264 Fixed issue that caused selected objects to disappear when moving them using keyboard shortcut keys. (BC:12835)
37323 Fixed regression that caused Altium Designer to hang after the Ctrl+C or Ctrl+X keyboard shortcuts were used following the use of the 'Add Template to Clipboard' command in the Schematic Library editor. (BC:13081)
37458 Fixed an issue that caused project parameters to not carry over to sheet symbols correctly. (BC:13133)
37463 Fixed an issue that caused performance degradation when selecting objects in a schematic document.
37689 Fixed an issue that caused the up/down hierarchy to not work when navigating between documents. (BC:12907)
37800 Fixed regression that caused the Bill of Materials (BOM) report generated during the Project Releaser process to display incorrect Physical Designators when Dynamic Compilation was enabled. (BC:13302)
37994 Fixed issue that caused an 'index out of range' error to occur when some components were placed in a Schematic document and updated into a PCB document.
38007 Fixed regression where, when clicking on a placed hyperlink with an invalid URL from a schematic document, resulted in a software crash. (BC:12773)
38017 Fixed issue that prevented a modified/added net class or rule from being applied to more than one selected parameter set at a time. (BC:13355)
38365 Fixed custom font setting reset after library reloading.
3082 Improved performance of routing in the presence of complex shapes.
13935 Fixed regression that caused texture to be displayed on the surface adjacent to the board, rather than on the outer surface, when some components were placed on the bottom layer. (BC:11732, BC:10304)
31887 Fixed an issue that caused a crash and alteration of the PCB document while generating ODB++ files in CAMtastic.
34130 Fixed a regression in which the PcbDoc was altered when an OutJob file was generated.
34268 Fixed bug with exported DWG files that caused holes in pads to export incorrectly if the pads were originally created with offset holes from the center. (BC:8168)
34853 Fixed an issue to automatically update the reference layers in the impedance tab of the Layer Stack Manager, after adding or moving metal layers in the layer stack.
35105 Fixed an issue where pad holes were missing from the NC Drill File when the pads has a certain combination of settings.
35223 Fixed issue that caused free pads to disappear from the Solder Mask layer when viewed from a 3DPDF file.
35742 Added ability to calculate impedance profiles in the Layer Stack Manager when in multi-thread mode.
35893 Fixed issue where running a Design Rule Check on the Minimum Gap to Return Path resulted in an error.
36132 Fixed issue that caused incorrect comparison after running the Show Differences command.
36242 Fixed an issue where interactive length tuning unions were given duplicate names, resulting in an error when the PCB file was being re-opened.
36289 Standard (No BOM) components are now included in the pick & place file, to support fiducials.
36534 Fixed issue that caused all True Type text to be deleted from mirrored embedded boards when in ODB++ format.
36535 Fixed issue that caused the ODB++ outline/profile layer to revert to 'Board Outline' after 'Mechanical Layer 17' was selected as the desired layer.
36536 Fixed issue that caused ODB++ outputs to not assign net information to free pads.
36539 Fixed issue that caused the Polygon thermal relief graphic to not overlap the intended object, nor display the generated ODB++ output correctly.
36541 Added options for selecting units of measurement in ODB++ Setup.
36542 Added options for selecting the type of output files in ODB++ Setup (BC:8262)
36545 Fixed regression that did not allow certain layers to be removed or added in the Layer Stack Manager.
36547 Fixed an issue that caused a comment of a component that refers to a project parameter to be displayed as a literal string in the PCB.
36559 Fixed an issue that caused keyboard arrows to not work when dragging selected tracks. (BC:12797)
36600 Fixed issue that would not allow a change in footprints for multiple components when the Properties panel is floating rather than docked. (BC:12717)
36663 Fixed issue that caused PCB Library footprints to sort in incorrect alpha-numeric order. (BC:12579)
36921 Fixed issue that caused the Gerber output for an OutJob file to truncate the penultimate period (.) within the generated file name if the file name contained multiple periods.
36945 Fixed an issue that caused PDF to not show component parameters if Schematic Prints is not set as the first PDF to be generated. (BC:3707)
36982 Fixed regression that caused the cursor to not snap to the center of a pad when prompted. (BC:12655)
37013 Component parameter support has been added to the ODB++ component exporter.
37069 Fixed regression that caused no error to be shown after running the Design Rules Checker (DRC) on pasted objects.
37103 Fixed issue that caused Strings in a PCBLib file to jump to the absolute origin. (BC:12933)
37180 Fixed a regression that caused generated teardrops to behave incorrectly for certain objects.
37230 Fixed issue that caused a crash when dragging trace segments in the PCB. (BC:13055)
37274 Fixed issue that caused incorrect xSignal delay values.
37404 Fixed a regression that caused incorrect justification for PCB printouts when TrueType font was enabled. (BC:13025, BC:13253)
37680 Teardrops no longer impact on the delay calculations for the route signal length.
37741 Fixed an issue that caused an error when managed project changes were committed but not pushed to a server for a time.
37822 Fixed regression that caused Altium Designer to display an error message regarding there being 'no top level document to compare' to after using the 'Import Changes From Source Schematics' command.
37840 A .SameCoordinates file attribute has been added to the Gerber Output.
37844 Fixed a Gerber bug where a non-circular aperture was selected for drawing an arc.
37998 Fixed regression that caused selecting connected copper option to not select polygons.
32323 Fixed regression where merging cells in a table resulted in an error message.
34370 Fixed issue that caused the Step Model to crash when changes were imported from within a Draftsman document.
36439 Improved the display of hole tolerances in the Drill Table, which now displays: empty fields as blank (instead of None); and +ve and -ve zero values. (BC:11213)
36442 Fixed bug that caused Parameters to not be transferred properly when a file was created from a Draftsman template. (BC:11424)
36473 Improved grid snapping for all Draftsman objects. (BC:8351)
36474 Added dimensioning to the centers of arc segments and quadrants of circles. (BC:12012)
36503 Added support for variants for Board Realistic View. (BC:11977)
36505 The 'All Variants' option featured in Draftsman documents has been renamed to 'No Variants' to reflect the fact that the two options function the same and to provide consistency between Draftsman documents and the Projects panel. ( BC:11529)
36508 Added ability to snap to middle of line (BC:7663).
36511 Added ability to use Schematic Sheet templates within Draftsman documents (BC:6630)
36512 Rectangular shape option has been added to the Board Detail View. (BC:8271)
36513 Added ability to alter the Symbol Size of selected symbols within the Drill Symbol Configurations dialog (BC:11304).
36514 The same Drill Table symbols that are available in the PCB editor can now be used in the Draftsman editor to ensure consistency, courtesy of the new Sync symbols with PCB option. (BC:8197)
36515 The SVG file format has been added to Draftsman documents (BC:10014)
36516 The ability to snap dimensions to component references has been added to the Draftsman editor. (BC:7031)
36517 Added current grid units to status bar.
36518 Added multi-selection capability when dragging a vertex in the Draftsman editor.
36521 Added relative values to Snap Distance for document options.
36522 Added "New" command to insert or add a new sheet (BC:8131)
36809 Added board size information to document parameters (BC:7482)
36842 Fixed issue where the Realistic View was not demonstrated properly for rigid-flex designs.
36843 Fixed issue where Assembly View did not adhere to the Document Variant Settings.
37016 Server-side Schematic sheet templates are now available in Draftsman. (BC:6630)
37120 Fixed issue that caused the zoom function to not work as intended within Draftsman and Multi-board Schematic editors when a display scale of more than 100% was used on a 4K monitor. (BC:12233)
38099 Fixed issue that did not allow edits to cloned managed Draftsman templates.
32826 Fixed issue that caused the autosave function to run multiple times on library files during the first backup after manually saving, depending on the quantity of projects that use the same library file.
35540 Fixed an issue that caused Altium Designer to not minimize when the task icon was clicked from the task bar.
35734 The background color present in the 3D preview featured in the Components mode of the Properties panel has been changed to grey to contrast black-colored components.
36059 Fixed an issue that caused high CPU usage after using the Components panel.
36061 Fixed issue that caused users to be using several licenses at once when the 'Sign in automatically' option was checked, when they should have only been utilizing one license at a time.
36177 Configured and executed component data synchronization from flat table sources (dblib, csv, ODBC) for Concord Pro and NEXUS.
36223 Fixed issue that caused zoom and highlighting features to not work properly for some objects from within a generated PDF.
36642 Fixed an issue that caused a crash after opening the Find Similar Objects dialog when a script is installed using the Scripting System - Global Projects page of the Preferences dialog.
36741 Fixed issue that caused the entire text typed in the port name to be deleted during typing if the cursor was positioned at the beginning or end of the text.
36965 Fixed an issue where performing the SVN function 'Compare with Head' would result in an incorrect project structure being displayed in the Projects panel. (BC:12882)
36972 Fixed issue that caused the Aperture Wizard dialog to be incorrectly resized.
37091 The Share dialog has been added, allowing you to share your design projects with others, directly from within the software
37348 Redesigned the user login and connections drop-downs.
37381 Added ability to share a project on any server without additional validation dialogs when viewing and editing.
37499 Fixed bug that caused the tab of the active panel to not show as active.
37532 Added ability to invite team members from your workspace to edit selected projects.
37551 Fixed an issue with opening a project from a cloud-based workspace through a proxy server.
37734 The Storage Manager, Messages and Output panels are now hidden by default.
37903 Improved experience when starting Altium Designer for the first time after installation including automatic log-in to AltiumLive and choice of appropriate license.
38066 Updated the connection and authorization processes to reduce the software start-up time.
Data Management
35951 The cache folder on the Data Management - SVN Libraries page of the Preferences dialog is now included when saving preferences to file (*.DXPPrf).
36010 Fixed issue that caused links within the Components mode of the Properties panel to not disappear after being deleted until the Properties panel was reopened.
36034 Improved performance optimization for the Library Migrator.
36165 A new option has been added to the Advanced Settings dialog - Explorer.ShowSystemFolders. With this option enabled, system folders will be visible for all connected servers when browsing server content through the Explorer panel.
36218 Fixed an issue that caused the 'Sign in' dialog to open again after clicking Sign In then accessing servers/workspaces you can connect to from the user login drop-down.
36276 Fixed an issue where the Single Component Editor did not support a 2-level revision naming scheme, giving a duplicate revision ID error after editing and re-releasing the component.
36291 Improved Components panel caching behavior to only present cached components from currently connected server(s).
36638 Fixed an issue that caused the location and visibility of parameters to not update when the 'Preserve parameter locations/visibility' options were disabled in the Update From Library dialog.
37116 Fixed an issue whereby signing in to https servers would not allow certain plugins to work in the software if the certificate was self-signed.
37119 Fixed performance degradation issue with the Item Manager.
37173 Improved performance time when accessing the Create Project dialog.
37275 Ability to activate the Altium 365 Workspace for a company from within Altium Designer.
37433 Fixed an issue that caused an error when committing a project to version control
37436 Fixed regression that caused print settings to be lost from the original template after the report was generated.
37646 Fixed regression that caused an erroring reading 'Unrecognized library type' to appear after an exported .IntLib file was installed in the Components panel.
37834 Fixed issue that caused the filter in the Components panel to not display all available values.
36793 Fixed issue that caused Excel macros in *.XLSM or *.XLTM to be removed when exporting. (BC:12723)
Layer Stack Manager
36954 Fixed issue that caused newly added material to not be updated in the Altium Material Library dialog when 'Update' was selected.
33952 The KiCAD Importer has been added to Altium Designer. (BC:6199)
35034 Fixed an issue that would cause an Access Violation while importing a specific CADSTAR PCB file.
35035 Fixed an issue that caused CADSTAR schematics to import incorrectly.
35036 Fixed an issue with the P-CAD importer that would cause a List Index Out of Bounds while importing a specific PCB file.
35299 Fixed issue that caused objects to be displayed incorrectly when importing CADStar projects.
35303 Fixed issue that caused backslashes to incorrectly appear before the first character when importing a CADStar project that contained negation over net names.
36128 Fixed an issue that caused vias and pads to not import when importing P-CAD designs.
36278 Fixed issue that caused DxDesigner to import components incorrectly. (BC:12361)
36737 Added ability to select specified layers when exporting to AutoCAD. (BC:6287)
37839 A .FilePolarity attribute has been added to the Gerber Output


Found an issue with this document? Highlight the area, then use Ctrl+Enter to report it.

Contact Us

Contact our corporate or local offices directly.

We're sorry to hear the article wasn't helpful to you.
Could you take a moment to tell us why?
200 characters remaining
You are reporting an issue with the following selected text
and/or image within the active document: