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Error "Tmcomm service failed to start. The driver has been blocked from loading" in Portable Security

    • Updated:
    • 29 Jun 2020
    • Product/Version:
    • Portable Security 2.0
    • Portable Security 3.0
    • Platform:
Summary

The following error is encountered in the Event Logs: 

"The tmcomm service failed to start due to the following error: This driver has been blocked from loading"

There are no known symptoms, issue or performance impact aside from this error from the Event Logs.

Details
Public

The root cause of this issue is that specific old versions of Tmcomm drivers are blocked by MS, and this was intentionally done because these versions are outdated and known to have issues.

The affected Tmcomm versions are as follows:

Portable Security VersionTmcom Version
2.05.50.*
3.06.70.1000~1120

To resolve this issue, apply pattern updates on Portable Security to update tmcomm.sys to 6.7.1123 or higher. These higher versions will no longer be blocked by the OS.

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Internal
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Rating:
Category:
Troubleshoot
Solution Id:
000247151
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