This article contains improvements to FastViewer components and infrastructure, organized by the release date of the changes.

Release Date: 20.02.2026

• Fixed an issue in the DownloadAPI where the moduleconfig.xml within Remote Setups could contain a restricted server list entry.

Release Date: 11.02.2026

Portal.fastviewer.com

• Fixed an issue where the Remote Setup (MSI) uninstaller did not function correctly for customers with specific security policies. 
  This affects versions 3.31.0001 and higher.

Release Date: 6.02.2026

Webconsole and Extension for ESMP

• Caching improvements: Repeated Agent downloads are now delivered faster once they have been generated and cached.

Portal.fastviewer.com

• Caching improvements: Repeated downloads from portal.fastviewer.com are now delivered faster once they have been generated and cached. 
  If any portal profile settings are modified, the cache is cleared, and the initial download will be regenerated.
  Affected files:
  • Master and Client modules (including CEF and software distribution packages)
  • Remote Agent Setups  (including software distribution packages)

Release Date 23.12.2025

Download API

• Performance Improvement: Enhanced the performance of the DownloadService and Resource Generator.
• Stability Improvement: Improved the reliability and overall robustness of the DownloadService and Resource Generator.
• Impact: Changes apply to portal.fastviewer.com, the M42 FastViewer WebConsole, the FastViewer Extension for ESMP, and associated APIs.