Microsoft Office error - Something went wrong [5fcl8]

Question

Hello Team,

Users are facing issues while accessing Microsoft office applications and it throws error “something went wrong [5fcl8]

It just started this week. Server 2019 RDS server with Microsoft 365 Apps for Enterprise. We have also noted that the new users we have created are impacted, but prior users are not. Any new user also has trouble accessing the Start Menu and search functions when RDP'ing directly into the server. We use our RDS server for remote apps.

User profiles which are created newly are facing this issue whereas old user profiles are able to access O365 applications successfully.

Web sign in works fine. Activation works fine from desktop apps on their laptop.

We have tried the following:

reg delete HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\FirewallRules /va /f

reg delete HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\RestrictedServices\Configurable\System /va /f

reg delete HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\RestrictedServices\AppIso\FirewallRules /va /f

Complete uninstallation and reinstallation of O365 on server but the issue still persists.

We are on Version 2501 Build 16.0.18429.20132 (64-bit) and Shared Computer Activation.

Server 2019 is up-to-date with the latest patching as of Thursday this week.

Answer 1

Dear Josh Blunck,

Good day! Thank you for posting to the Microsoft Community. We are happy to assist you.

We’re truly sorry to hear that users are facing issues accessing Microsoft Office apps on the 2019 RDS server. We understand the frustration and inconvenience this has caused, especially after you've already tried reinstalling Office and modifying the registry. We genuinely appreciate the efforts you've made and sincerely apologize for any disruption this issue has brought to your work.

Considering that the issue occurs with new profiles while old profiles work as expected, it seems that the problem might be related to the server environment. To get the fastest and best assistance, we sincerely recommend posting your concern to the specific channel: Microsoft Q&A with Windows Sever tag. Members and engineers over there are proficient in Windows Server and Office issues and can address your query effectively and accurately.

Please accept our sincere apologies for not being able to resolve the problem directly and for redirecting you to a different community. The members in this category primarily focus on general Microsoft 365 and Office concerns and may have limited knowledge of Windows Server environment. We regret any inconvenience this may cause.

Once again, we apologize for the inconvenience this has caused. We appreciate your patience, understanding, and cooperation. Thank you for your time.

Hope you stay safe and healthy.

Sincerely,

Rhoda | Microsoft Community Moderator