Tuesday, 8 November 2011

Windows 2008 R2 Service pack 1 failing to install 0x800f0818

I've had a couple of installations of Windows updates fail recently especially when trying to install Service pack 1.


The last attempt was on a brand new virtual server, so I knew nothing else could be causing the problem except something Microsoft related.


When checking the event log I found event ID 8 - Service Pack installation failed with error code 0x800f0818


According to other blog posts some files in the packages directory have become corrupt.  


You need to install the System Update readiness tool which will give you a log to determine which files are corrupt.  The installer is available here : http://support.microsoft.com/kb/947821


Sometimes the installation of the readiness tool alone will fix the issue. 


Open checksur.log file under %windir%\Logs\CBS. Look for something similar to :


Unavailable repair files:
 servicing\packages\Package_for_KB2483614_RTM~31bf3856ad364e35~amd64~~6.1.1.1.mum servicing\packages\Package_for_KB2483614_RTM~31bf3856ad364e35~amd64~~6.1.1.1.ca


If there are no errors then try the servicepack again otherwise you may need find the offending files take ownership and replace them with those from another server that works.

2 comments:

  1. May need http://www.microsoft.com/en-us/download/details.aspx?id=29359 to fix kb2675157 issue if that appears in the log

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