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This is normal and expected. For more information, refer to this Red Hat article.

Keywords: err -11,unknown module

"Request for unknown module key 'Trend Micro Deep Security 12: signature and/or required key' err -11" shows in syslog or command output from "dmesg" in Linux

Product / Version includes:

Deep Security 20.0 , Deep Security 12.0

Last updated: 2025/05/08

Solution ID: KA-0009615

Category: Troubleshoot

Summary

The following message may appear in syslog or command output from "dmesg" in Linux OS:

Request for unknown module key 'Trend Micro Deep Security xx: signature and/or required key' err -11

Note: This may be applicable to Deep Security version 12.0 or 20.0

This is normal and expected. For more information, refer to this Red Hat article.

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"Request for unknown module key 'Trend Micro Deep Security 12: signature and/or required key' err -11" shows in syslog or command output from "dmesg" in Linux

"Request for unknown module key 'Trend Micro Deep Security 12: signature and/or required key' err -11" shows in syslog or command output from "dmesg" in Linux

Product / Version includes:

Summary