HP ThinPro updates/installs "Signature Block Verification Failed: Certificate Verify Error"

[N_Connor]

...they've release Service Pack 8.7 today (17th Oct) - which once installed (no need for xarinstall -k) seems to resolve the issue.

[Dugg901]

Is there an equivalent SP for ThinPro 8.0?  We are running an older version of HPDM, for if we upgrade we cannot manage the older ThinClients we have out in the wild. Most have been upgraded to ThinPro 8SP7.3...but we do have a few Thinpro 7.2 stragglers.

[bob883]

N_Conner seems to be correct.  The new Thinpro 8.1 SP8.7 that I downloaded today (17.Oct.2025) installs without the certificate error.  I attempted the SP8.7 install back on 09.Oct.2025 and did receive the same error.

Dugg901 - I believe ThinPro 7.2 is still supported in the newer versions of HPDM.  I still have it listed in my dropdown list and I am running HPDM 5.0.14.  The "Unidentified" section was originally released in HPDM 5.0.11 and the release notes say "Removes full support and moves devices with these OS to ‘Unidentified’ tab: ThinPro 5, ThinPro 6, ThinPro 7.0, ThinPro 7.1, WES7P, WES7E, any Windows 32-bit version"