Error Code: 0x800B0100 - Can't install SP1

Win7pro SP1 won't install. I get 'Trust_E_NoSignature(0x800B0100). I've tried 'Troubleshoot problems installing a service pack for Windows 7', I ran the 'Readiness tool', all to no avail. Please help.

Question Info

Last updated February 25, 2019 Views 16,593 Applies to:

...after spending hours and hours trouble shooting this issue with MS Support, to no avail, it was decided to do an 'Install-Repair'.

After the 'Install-Repair', win7 reported a corrupted 'NET-Framework v4'. After Win7 fixed this, all the updates were downloaded and installed. Finally, the last update, being SP1, I ran the 'Hotfix', before the SP1 install. SP1 installed without any issues.


Hope this helps someone!



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