FSLogix release 2201 Public Preview
Published Jan 25 2022 09:03 AM 7,144 Views

Hello FSLogix nation!


Microsoft is pleased to announce the availability of the FSLogix Preview release 2201.


This is a PUBLIC PREVEW release


To access please go to this link and complete the following form: Public Preview request form


After submitting the form, a download link will be provided.




  • Fixed issue where the FSLogix Profile Service would crash if it was unable to communicate with the FSLogix Cloud Cache Service.
  • The Office file cache is now machine specific, and therefore cannot roam between session hosts, so it is excluded from FSLogix containers.
  • FSLogix Search Indexing is now only available in versions of Windows Server that do not provide per-user search indexing. Per-user search indexes were introduced in Windows Server 2019 (version 1809). FSLogix search indexing is not available in Windows 10 or Windows 11.
  • FSLogix now correctly handles cases where the Windows Profile SVC refCount registry value is set to an unexpected value.
  • Over 30 accessibility related updates have been made to the FSLogix installer and App Rules Editor.
  • A Windows event now records when a machine locks a container disk with a message that looks like "This machine '[HOSTNAME]' is using [USERNAME]'s (SID=[USER SID]) profile disk. VHD(x): [FILENAME]."
  • Resolved an issue where the DeleteLocalProfileWhenVHDShouldApply registry setting was ignored in some cases.
  • Fixed an issue where active user session settings where not retained if the FSLogix service was restarted. This was causing some logoffs to fail.
  • FSLogix will no longer attempt to reattach a container disk when the user session is locked.
  • Fixed an issue that caused the FSLogix service to crash when reattaching container disks.
  • Fixed a Cloud Cache issue that caused IO failures if the session host's storage blocksize was smaller than a cloud provider's. For optimal performance, we recommend the session host disk hosting the CCD proxy directoy has a physical block size greater than or equal to the CCD storage provider with the largest blocksize size.
  • Fixed a Cloud Cache issue where a timed out read request (network outage, storage outage, etc.) was not handled properly and would eventually fail.
  • Reduced the chance for a Cloud Cache container disk corruption if a provider is experiencing connection issues.
  • Resolved an issue where temporary rule files were not deleted if rule compilation failed.
  • Previously, the Application masking folder was only created for the user who ran the installer. With this update, the rules folder is created when the Rules editor is launched.
  • Resolved an interoperability issue with large OneDrive file downloads that was causing some operations to fail.
  • Fixed an issue where per-user and per-group settings did not apply if the Profile or ODFC container was not enabled for all users.
  • Resolved an issue where the Office container session configuration was not cleaned up if a profile fails to load.
  • Fixed an issue where HKCU App Masking rules leveraging wildcards would fail to apply.
  • Fixed an issue where FSLogix did not properly handle logoff events if Profile or ODFC containers were disabled during the session or per-user/per-group filters were applied mid-session that excluded the user from the feature. Now FSLogix logoff related events will always occur if FSLogix loaded a container for the user.
  • Fixed an issue that caused some sessions configured with an ODFC container to fail to login.
  • Resolved an issue where the App Rules editor would crash if there were no assignments configured.
Version history
Last update:
‎Jan 25 2022 09:03 AM
Updated by: