SBS Backup Fails on VSS 0x800423f4 error Part 3

Well the latest suggestion appears to be related to having Volume Shadow Service not having a .dll properly registered. Somehow I think this might be related to SP2 of Exchange or a recent installed security patch as we've seen it on multiple servers and those are the only things that have recently been installed. At any rate here's the way to reregister the VSS files: (copy the files into a .cmd file or just run them individually from a command prompt)

C:
CD \Windows\System32
Net stop vss
Net stop swprv
regsvr32 ole32.dll
regsvr32 vss_ps.dll
Vssvc /Register
regsvr32 /i swprv.dll
regsvr32 /i eventcls.dll
regsvr32 es.dll r
egsvr32 stdprov.dll
regsvr32 vssui.dll
regsvr32 msxml.dll
regsvr32 msxml3.dll
regsvr32 msxml4.dll

Reboot your server. After reboot, open a command prompt and run: vssadmin list writers
Look for any errors.

We didn't do a reboot the first time and got the following errors in the backup.

Volume shadow copy creation: Attempt 1. Timeout before function completed Error returned while creating the volume shadow copy:0xffffffff. Error returned while creating the volume shadow copy:ffffffff Aborting Backup.

After the reboot we did a backup now and everythign started working. We will continue to monitor this for the next week or so. Here's to a good backup!