[There's a reason that Yoda is the unofficial mascot of SBS.  Size indeed matters not.] Remember: you must run psconfig after SharePoint sp1 is installed: - THE OFFICIAL BLOG OF THE SBS DIVA
Thu, Jun 30 2011 17:05 bradley

Remember: you must run psconfig after SharePoint sp1 is installed:

If you have SBS 2011 and you or your client installed SharePoint sp1

Backups will fail

Backup unsuccessful.  A volume shadow copy service operation failed.  Unknown error (0x800423f0)

see Backup has started to fail and will not work SBS 2011:
http://social.technet.microsoft.com/Forums/en-US/smallbusinessserver/thread/b9a8a1a8-0aa1-4a71-b660-3a9ab41ec287

RESOLUTION:  Run the psconfig command

You need to fix SharePoint before your backup will work.

1. Open an Administrative command prompt.
2. Change directory to C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\BIN
3. Run PSConfig.exe -cmd upgrade -inplace b2b -force -cmd applicationcontent -install -cmd installfeatures

 

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# re: Remember: you must run psconfig after SharePoint sp1 is installed:

Thursday, June 30, 2011 11:30 PM by Alan Baker

Perfect timing. I was just setting up a new server and noticed DPM started to have problems backing it up.

Just running the command now :)))

# re: Remember: you must run psconfig after SharePoint sp1 is installed:

Friday, July 01, 2011 12:51 AM by Jan Blom

Thanks, you just saved me another couple of gray hairs ...

# re: Remember: you must run psconfig after SharePoint sp1 is installed:

Friday, July 01, 2011 8:50 AM by Robert

Um, why wasn't this just part of the sp1 update process?

# re: Remember: you must run psconfig after SharePoint sp1 is installed:

Friday, July 01, 2011 9:21 AM by bradley

Because no SharePoint 2010 patch ever does psconfig automatically anymore.

It's expected that we do it.

# re: Remember: you must run psconfig after SharePoint sp1 is installed:

Friday, July 01, 2011 9:50 AM by Kelvin Auyeung

Just applied the SharePoint SP1 yesterday and started scratching my hair off this morning on the SBS backup failure. Thank you!

# re: Remember: you must run psconfig after SharePoint sp1 is installed:

Friday, July 01, 2011 12:52 PM by SeanPT

When there was that article a few weeks ago about having to do the psconfig manually I went ahead and made a batch file and put it on the desktop of all my SBS2011 boxes.

# re: Remember: you must run psconfig after SharePoint sp1 is installed:

Tuesday, July 05, 2011 10:45 PM by P. Lavoie

Susan, thank you so much.  I don't know what I would do without your SBS blogs....

# re: Remember: you must run psconfig after SharePoint sp1 is installed:

Thursday, July 07, 2011 3:21 AM by Schwemmi

Well done, Problem is solved.

# re: Remember: you must run psconfig after SharePoint sp1 is installed:

Friday, July 15, 2011 9:32 AM by JoAnn

Thank you Thank you. We just started SBS2011, and our backups stopped like you stated.  Please note that it takes about 10 minutes for the fix to take after you run it - the first backup I tried to run right away failed with the same message, but then it worked great.

# re: Remember: you must run psconfig after SharePoint sp1 is installed:

Tuesday, July 26, 2011 2:58 AM by Maddin

10 minutes !!! u saved my weekend

# re: Remember: you must run psconfig after SharePoint sp1 is installed:

Tuesday, July 26, 2011 2:59 AM by Maddin

10 minutes !! reading your post with the time to wait saved my weekend

# re: Remember: you must run psconfig after SharePoint sp1 is installed:

Tuesday, August 16, 2011 10:46 AM by Kevin J. Smith

You also have to run it after installing any sql server SPs, found that out the hard way.

# re: Remember: you must run psconfig after SharePoint sp1 is installed:

Tuesday, August 16, 2011 12:00 PM by bradley

I've never seen or heard this, can you ping me directly at susan-at-msmvps.com so I can get some log files?

# re: Remember: you must run psconfig after SharePoint sp1 is installed:

Monday, September 26, 2011 4:13 AM by Jules Wilko

And remember to restart the IIS and WWW Publishing service after running this, or else your ESM / Powershell doesn't work any more for Exchange :-D