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‎10-03-2025 01:42 PM

HP Recommended

HP T550 Thin Client

ThinPro OS 8.1 SP7

Using ThinUpdate on the ThinPro, we perform any install from the service pack and get this error

"Signature Block Verification Failed: Certificate Verify Error (Verify error: Certificate is not yet valid)

Fatal Error: Xar File could not be verified!"

 

We have the same error if we push an update via HPDM.

 

This is happening for every app. Tried the following:

Zoom 6.4.11

Omnissa 2506

Omnissa 2412

AVD Windows 365 2025.8.22

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