Windows Update wuweb_site.cab Unknown Publisher

I had a machine that kept giving me errors when trying to do windows updates. Would mention wuweb_site.cab?random_numbers Unknown Publisher. Windows has found a problem with this file.

To fix it I had to do the following: re-register the Softpub.dll, Wintrust.dll,
Initpki.dll, Dssenh.dll, Rsaenh.dll, Gpkcsp.dll, Sccbase.dll, Slbcsp.dll,
Mssip32.dll, and Cryptdlg.dll files. To do so, follow these steps:

1. Click Start then click Run.
2. In the Open box type cmd and then click OK.
3. At the command prompt type regsvr32 softpub.dll and then press ENTER.
4. Click OK when you receive the message that DllRegisterServer in
Softpub.dll succeeded.
5. Repeat steps 1 through 4 for the following files: Wintrust.dll,
Initpki.dll, Dssenh.dll, Rsaenh.dll, Gpkcsp.dll, Sccbase.dll, Slbcsp.dll,
Mssip32.dll, and Cryptdlg.dll.
6. Type exit and then press ENTER to quit Command Prompt.
7. Close all browser windows and try to do updates again.


Also browsing around the above seems to fix the 0x800B0001 error as well when doing updates.