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  • Robot release notes
      • December 2025
      • November 2025
      • September 2025
      • July 2025
      • May 2025
      • February 2025
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Robot release notes

Last updated Dec 15, 2025

December 2025

December 15, 2025

Build number: 2026.0.182

Bug fixes

  • We fixed an issue where multiple "System.BadImageFormatException: Bad IL format" errors appeared in Event Viewer and Robot logs, making it difficult to identify relevant runtime errors.
  • We fixed an issue where an improperly owned %ProgramData%\UiPath\Shared\proxy.json file was quarantined without a valid replacement. A default file is now created instead. This prevents confusion with legacy XML-based proxy settings, which are ignored.
  • This version brings several performance fixes.

December 3, 2025

Build number: 2026.0.181

Bug fixes

  • Resolved an issue where Chrome window was not visible in the PiP preview. This was applicable for Chrome v139+ on Windows 11 22H2 or newer.
  • Fixed an issue that causes the LiteDB backup files to persist, using unnecessary disk space.
  • Fixed an issue where the RobotJS listener occasionally failed to start, causing the following error:
    System.TimeoutException: RegisterListenerPort timed out.System.TimeoutException: RegisterListenerPort timed out.
  • December 15, 2025
  • Bug fixes
  • December 3, 2025
  • Bug fixes

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