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Issue

The Signature Checking Root Certificate in ActiveUpdate (AU) Module will expire on September 2025. After the Root Certificate expires, the signature check feature will fail, which will cause the ActiveUpdate to fail.

Solution

These Critical Patches renews the Signature Checking Root Certificate in AU Module to prevent above issue.

Recommended Action

Trend Micro recommends applying this critical patch immediately to prevent above issue.

Download Locations

  • Download the Critical Patch for 7.0 (B1271) and 7.1 (B1176)
  • For further details, please check the corresponding ReadMe file for 7.0 (B1271) and 7.1 (B1176).

For support assistance, please contact Trend Micro Technical Support.

Keywords: DDAN 7.0 CP Build 1271, Build 1176, DDAN 7.1 issues,critical patch info,AU failure,expiration Signature Checking Root,prevention,renew signature root certificate