"Trend Micro Common Client Multi-Session Process Management Service stopped working" error message appears when security agent unloads in Worry-Free Business Security Services (WFBS-SVC)

- Updated:
- 4 Apr 2021
- Product/Version:
- Worry-Free Business Security Services 6.6
- Worry-Free Business Security Services 6.7
- Platform:
- N/A

Summary

"Trend Micro Common Client Multi-Session Process Management Service stopped working" error message pops up when the security agent unloads automatically after the installation or after an update.

Event Viewer Logs:

Details

To resolve the issue, do the following:

Unload the security agent.
Copy the following .dll files from "C:\Program Files (x86)\Trend Micro\Client Server Security Agent" to "C:\Program Files (x86)\Trend Micro\Client Server Security Agent\Misc":

If only some .dll files are missing only copy those that are needed from the ...\Client Server Security Agent folder to the ...\Misc folder.
- TmNotify.dll
- libeay32.dll
- ssleay32.dll
- DatFHS.dll
- tmdbg20_64x.dll
- OfcPIPC_64x.dll
Reload the agent.