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Showing posts from 2017

Repairing non-booting Windows 2012 R2 and others

If you're stuck in a "Preparing Automatic Repair" boot loop that always takes you back to the blue screen of unhelpful menu options:

Disable Automatic repair

Get to the recovery command prompt

bcdedit /enum

Get the name of the Windows entry (likely to be {default}

bcdedit /set {default} recoveryenabled No

Reboot

Now instead of getting into the loop of a failing repair it'll show you the real problem that it's failing to fix. This is likely to be a corrupt file. In my case it was c:\windows\system32\drivers\cng.sys which I copied from a working server that was at the same patch level.

All things WSUS

A variety of fun things that have dug me out of multiple WSUS related holes

Cleaning Unused Updates Getting reset server node is pretty common with this, so spin up SQL Management Studio and run:

Windows has no updates from WSUS Had this after creating a new VM from a fully patched VHDX. Updates form WSUS would only work after checking against Microsoft Update first.
1. Stop Windows Update Service 2. Delete contents of c:\windows\softwaredistribution 3. Check for Updates against WSUS again