Windows 2008 R2 error 0x800f0818

You may get the following error while installing service pack or updates on Windows 2008 R2 ( Error : 0x800f0818 )

Checking Windows Servicing Packages

Checking Package Manifests and Catalogs
(f) CBS MUM Corrupt 0x00000000 servicingPackagesPackage_for_KB2393802_RTM~31bf3856ad364e35~amd64~~6.1.1.1.mum  Expected file name Microsoft-Windows-Foundation-Package~31bf3856ad364e35~amd64~~6.1.7600.16385.mum does not match the actual file name

Checking Package Watchlist

Checking Component Watchlist

Checking Packages

Checking Component Store

Summary:
Seconds executed: 98
Found 1 errors
CBS MUM Corrupt Total count: 1

Unavailable repair files:
servicingpackagesPackage_for_KB2393802_RTM~31bf3856ad364e35~amd64~~6.1.1.1.mum
servicingpackagesPackage_for_KB2393802_RTM~31bf3856ad364e35~amd64~~6.1.1.1.cat

To fix the issue, you must copy files Package_for_KB2393802_RTM~31bf3856ad364e35~amd64~~6.1.1.1.mum and Package_for_KB2393802_RTM~31bf3856ad364e35~amd64~~6.1.1.1.cat to folder C:Windowsservicing

You can found this files in other windows installation. Then you can try install SP1. If problem persist you can run command from elevated cmd:

sfc /scannow

After that, everything will work fine!

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