Error 800B0100 when trying to install Windows 7 Service Pack 1


  1. youngmk
    Posts : 3
    Windows 7 Home Premium 64bit
       New #1

    Error 800B0100 when trying to install Windows 7 Service Pack 1


    I have tried multiple ways to resolve this problem (System Update Readiness Tool, SFC scan, Microsoft Fix it, manual installation, etc.) but to no avail.

    When I try to install the Windows 7 Service Pack 1 for x64-based Systems (KB976932) via Windows Update, the installation fails with an error code 800B0100.

    When I tried to manually install the SP, an error message appeared with details: "trust_e_nosignature (0x800b0100)."

    I am pretty frustrated considering the number of unsuccessful attempts and time I've thrown into fixing this problem. So, hoping that it will be addressed here, I have attached my CheckSUR log. Please let me know if any more information is needed.
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  3. NoelDP
    Posts : 21,482
    Win 7 x64 Home Premium (and x86 VirtualBox VM)/Win10
       New #2

    Your CheckSUR report shows the following missing files...
    Code:
    Unavailable repair files:
 winsxs\manifests\msil_system.security_b03f5f7f11d50a3a_6.1.7600.16543_none_708a89228a90a5c1.manifest
 servicing\packages\Package_1_for_KB979916~31bf3856ad364e35~amd64~~6.1.1.0.mum
 servicing\packages\Package_1_for_KB979916~31bf3856ad364e35~amd64~~6.1.1.0.mum
 servicing\packages\Package_2_for_KB979916~31bf3856ad364e35~amd64~~6.1.1.0.mum
 servicing\packages\Package_2_for_KB979916~31bf3856ad364e35~amd64~~6.1.1.0.mum
 servicing\packages\Package_4_for_KB979916~31bf3856ad364e35~amd64~~6.1.1.0.mum
 servicing\packages\Package_4_for_KB979916~31bf3856ad364e35~amd64~~6.1.1.0.mum
 servicing\packages\Package_for_KB979916_RTM~31bf3856ad364e35~amd64~~6.1.1.0.mum
 servicing\packages\Package_for_KB979916_RTM~31bf3856ad364e35~amd64~~6.1.1.0.mum
 servicing\packages\Package_for_KB979916~31bf3856ad364e35~amd64~~6.1.1.0.mum
 servicing\packages\Package_for_KB979916~31bf3856ad364e35~amd64~~6.1.1.0.mum
 servicing\packages\Package_1_for_KB979916~31bf3856ad364e35~amd64~~6.1.1.0.cat
 servicing\packages\Package_1_for_KB979916~31bf3856ad364e35~amd64~~6.1.1.0.cat
 servicing\packages\Package_2_for_KB979916~31bf3856ad364e35~amd64~~6.1.1.0.cat
 servicing\packages\Package_2_for_KB979916~31bf3856ad364e35~amd64~~6.1.1.0.cat
 servicing\packages\Package_4_for_KB979916~31bf3856ad364e35~amd64~~6.1.1.0.cat
 servicing\packages\Package_4_for_KB979916~31bf3856ad364e35~amd64~~6.1.1.0.cat
 servicing\packages\Package_for_KB979916_RTM~31bf3856ad364e35~amd64~~6.1.1.0.cat
 servicing\packages\Package_for_KB979916_RTM~31bf3856ad364e35~amd64~~6.1.1.0.cat
 servicing\packages\Package_for_KB979916~31bf3856ad364e35~amd64~~6.1.1.0.cat
 servicing\packages\Package_for_KB979916~31bf3856ad364e35~amd64~~6.1.1.0.cat
    I'll post a fix protocol for them later - in the meantime, please run an SFC /SCANNOW, and post the CBS.log so we can see if anymore files need fixing as well.
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  4. youngmk
    Posts : 3
    Windows 7 Home Premium 64bit
    Thread Starter
       New #3

    Here is the compressed CBS folder containing the CBS log.
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  6. NoelDP
    Posts : 21,482
    Win 7 x64 Home Premium (and x86 VirtualBox VM)/Win10
       New #4

    Good - the SFC scan is clear, at least.
    There are however a large number of errors related to the attempt to install SP1 - I hope most of them will go away after the fix I'll be posting in a few minutes.
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  7. NoelDP
    Posts : 21,482
    Win 7 x64 Home Premium (and x86 VirtualBox VM)/Win10
       New #5

    I've uploaded a file - ymkaa.zip - to my SkyDrive at Noel's SkyDrive
    Please download and save it.
    Right-click on the downloaded file, and select Extract all…
    Extract to the default location - which will create a new folder ymkaa in the same place.
    Open this folder - there should be two folders inside it (Manifests, and Packages)

    Copy the content of the Packages folder to the folder
    C:\Windows\Temp\CheckSur\Servicing\Packages

    And the content of the manifests folder (.manifest files) into this folder:

    C:\Windows\Temp\CheckSur\Winsxs\Manifests

    Now run the CheckSUR tool again (it may take a while)

    Post the new CheckSUR.log file, and the CheckSUR.persist.log file.

    Once completed, please also run another SFC /SCANNOW and post the new CBS.log file so we can see if this has highlighted any new problems.
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  8. youngmk
    Posts : 3
    Windows 7 Home Premium 64bit
    Thread Starter
       New #6

    I've attached the updated CBS folder containing the new CheckSUR and CBS logs.

    UPDATE: Windows Update successfully installed the Service Pack! Thank you so much, Noel. I am so glad that I decided to post my problem here on SevenForums.

    Inferring that the Service Pack installed without any problems, I will mark this thread as solved. Once again, thank you.
    Last edited by youngmk; 03 Jul 2013 at 01:02. Reason: Update
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  10. NoelDP
    Posts : 21,482
    Win 7 x64 Home Premium (and x86 VirtualBox VM)/Win10
       New #7

    Yep - all seems good now - and the fact that SP1 installed is a good sign :)

    Good luck.
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