Votes:
After updating to PRTG 25.1.104, the PRTG core server does not start anymore and the log contains the following message:
Signature of \Program Files(x86)\PRTG Network Monitor\32 bit\PRTG Server.exe is not valid
What can I do to resolve the issue?
Created on Mar 17, 2025 2:32:54 PM by
Last change on Mar 17, 2025 2:44:58 PM by
1 Reply
Votes:
This article applies as of PRTG 25.1.104
As of PRTG 25.1.104, a new trusted certificate authority signs the binary of PRTG. As a result, the code signing signature verifications fails on systems on which the following trust chain in the trusted root certificates of the Windows certificate store is missing:
This causes the PRTG core server to not start in some cases. You can resolve this issue if you add the trusted (root) certificates. You can either use the Microsoft Root Certificate Program or download the certificate from Entrust.
To use the Microsoft Root Certificate Program to add the certificates, follow the instructions here: Updating List of Trusted Root Certificates in Windows.
You can also download the following certificates and import the missing ones to the certificate store on the PRTG core server system and probe system:
Created on Mar 18, 2025 8:38:35 AM by
Last change on Mar 18, 2025 10:42:35 AM by
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