Flushing the cache. By stopping the Windows Update service and deleting the contents of the SoftwareDistribution folder, you force the client to start fresh.
Faulting module path often reveals the culprit: why does wuauclt.exe crash?
The Windows Registry is the massive database that tells the operating system how to function. wuauclt.exe relies on specific keys to know where to download updates and which version of the update engine to use. Flushing the cache