After reviewing some methods, you can fix this error for reference
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http://support.microsoft.com/kb/947821
go to the above path to download System Update Readiness Tool to fix window update errors. And in C:\Windows\Logs\CBS view CheckSUR.log
Such as: An update file error appears, need to fix
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Run->appwiz.cpl to uninstall this update and uninstall it. Reinstall this update to indicate that the update has been installed. So, we can only unzip this update to fix the wrong update file.
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We unzip the update file as follows: Unzip the MSU update file
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Unzip the CAB file
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Search for an updated file of the error we want from the extract file
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Cover to the C:\Windows\servicing\Packages directory. If the prompt cannot be overwritten, the current user is required to have full control of the directory before overwriting.
Open the Server Manager again and there's no problem.
This article is from the "Cheng Zi" blog, make sure to keep this source http://jif521.blog.51cto.com/848361/1584244
Windows Server R2 Error 0x800f0818