Install 12.1 RU1 and getting Verify Class ID error as well.
Install appeared fine, issue starts at login.
All following startup items and applications fail to launch.
Windows error:
Event ID 1000
Faluting application verclsid.exe, version 5.1.2600.5512, faulting module kernel32.dll, version 5.1.2600.5781, fault address 0x00012b6e.
Ran a cleanwipe (version for 12.1)
did a install with only AV, set tamper protection to log only.
installed a managed only client, still no go.
Thinking it something with the startup items...