Windows Update (WSUS) failed with error 0x80080005? try this solution!
Some customers reported that they got error 0x80080005 on their WSUS client. A simple fix is adding the following registry key:
HKLMSYSTEMCurrentControlSetControl
Key = RegistrySizeLimit
Type = DWORD
Value = 4294967295
If the above solution can not resolve your failure, please send me the log files.