I am trying to upgrade my Exchange 2007 setup to SP1. I have upgraded my CAS and HUB successfully, but having a problem upgrading my mailbox role. I am using CCR for my mailbox setup, when I try to install SP1 on my passive node I get the following error:
Setup cannot continue with the upgrade because the "powershell" (Machine: Ex1 | scope: domain:com> process <ID: 2564> has open files. close the process and restart setup.
The Exchange Server Setup operation did not complete. for more information. visit "support:microcoft:com" and enter the error ID.
Exchange Server setup encountered an error.
I have faced this problem for the past 3 days, and googled it all over the web. I have visited the link provided with the error, but no luck.