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Patching Virtual Machines Tip

To manage our virtual machines we use Virtual Machine Manager 2008 R2.

I have trouble logging into my VM after doing just a couple reverts to checkpoints. The machine drops trusts to the domain, so it won’t let me log in with my domain account, boo.

Here’s how to avoid it. Thanks, Kevin.


For these steps, log in with a local administrator account:

Step 1

Set the registry key below:
HKEY_LOCAL_MACHINES\SYSTEM\CurrentControlSet\Services\Netlogon\Parameters DisablePasswordChange REG_DWORD 1
(Reboot and add new Checkpoint A)

Step 2

Rejoin the domain
(Reboot and add new Checkpoint B)

Step 3

Run all the important Windows Updates
(Reboot and add Checkpoint C)

Step 4: Remove Checkpoints A and B


(I hate patching virtual machines…)

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