Error Result = 0x87d00668 in Updatesdeployment log

Problem:  Error Result = 0x87d00668 in Updatesdeployment log during patches installation

Solution: 

1. Stop the Windows Update service.
2. Rename C:\Windows\SoftwareDistribution to SofwareDistribution.old
   
3. Rename C:\Windows\System32\GroupPolicy\Machine\registry.pol to registry.pol.old
   
4. Restart Windows Update service.
5. Run the Updates Scan cycle 2-3 times till successful.
6. Run the Updates Evaluation cycle, patches will install