Exchange 2010 Error applying Service Pack “Setup previously Failed while performing action Install”

I encountered this error while performing an install of an Exchange 2010 Service Pack: Some controls aren’t valid. – Setup previously failed while performing the action “Install”. You can’t resume setup by performing the action “BuildToBuildUpgrade” To fix the issue, we need to open the registry, find and remove the… Continue reading

Active Directory Domain Controller Error “The target principal name is incorrect” Event ID 3210 and Event ID 5722

My business closed one of their remote branches recently. The ex-employees took their time packing and sending the hardware back to our HQ. The Domain Controller was offline for more than a month. When we finally got it back, I recreated the routing and plugged the server back in so… Continue reading

Lync 2013 Error “Failed while updating destination pool” migrating a user from Lync 2010 to Lync 2013

So, lets say you’ve built up a Lync 2013 installation in parallel to your existing Lync 2010.    It’s time to migrate users from Lync 2010 registrar pool to the Lync 2013 pool.   But when you do this, you get the following error “Failed while updating destination pool”   The… Continue reading