1. #1
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    GUIDE: MSDTC.log corruption (Error 800700A1 when installing KB3000850)

    Hello and welcome to Sysnative :)

    There have seen countless issues with file MSDTC.log being corrupt on Windows 8 machines. When this file is corrupt it will stop the installation of KB3000850 with a common error of 0x800700a1. Looking inside the CBS log (for advanced users) you will notice the following error:
    Code:
    2015-03-10 15:08:26, Error                 CSI    0000087e (F) Failed on regenerating file [l:18{9}]"MSDTC.LOG"[gle=0x80004005]
    2015-03-10 15:08:26, Info                  CSI    0000087f [SR] Cannot repair member file [l:18{9}]"MSDTC.LOG" of Microsoft-Windows-COM-DTC-Runtime, Version = 6.3.9600.16384, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral in the store, file cannot be decompressed
    To fix this file corruption please follow the steps below:

    1. Right click on the button
    2. Click on Command prompt (Admin) => Press Yes on the prompt
    3. Inside the Command Prompt windows copy and paste the following command SFC /SCANNOW
    4. Please wait for this to Finish before continuing with rest of the steps.


    Once SFC /SCANNOW has completed, please continue:

    1. Download SFCFix.exe and save this to your Desktop.
    2. Save any open documents and close all open windows.
    3. Double click on SFCFix.exe to open it.
    4. Follow all on screen instructions and upon completion.

    Once SFCFix has completed you should have a text file pop up called SFCFix.txt, if this doesn't open automatically please go to your desktop and open SFCFix.txt.

    Inside the results screen you should have something similar to:

    Code:
    SFCFix version 2.4.3.0 by niemiro.
    Start time: 2015-02-28 00:08:00.796
    Microsoft Windows 8.1 Update 3 - amd64
    Not using a script file.
    
    
    
    
    AutoAnalysis::
    CORRUPT: C:\WINDOWS\winsxs\amd64_microsoft-windows-com-dtc-runtime_31bf3856ad364e35_6.3.9600.16384_none_0a1162f033fa01f6\MSDTC.LOG
    
    
    SUMMARY: Some corruptions could not be fixed automatically. Seek advice from helper or sysnative.com.
    CBS & SFC total detected corruption count: 1
    CBS & SFC total unimportant corruption count: 0
    CBS & SFC total fixed corruption count: 0
    SURT total detected corruption count: 0
    SURT total unimportant corruption count: 0
    SURT total fixed corruption count: 0
    Before continuing its is Extremely important that your SFCFix result matches the above result in BLUE, if it does NOT, stop here and start a new thread in this forum following the instructions outlined here: Windows Update Forum Posting Instructions

    Following the steps below will repair corruption C:\Windows\winsxs\amd64_microsoft-windows-com-dtc-runtime_31bf3856ad364e35_6.3.9600.16384_none_0a1162f033fa01f6\MSDTC.LOG

    Warning: this fix is specific to the above file ONLY. No one else should follow these instructions as it may cause more harm than good. If you are after assistance, please start a thread of your own.

    1. Download SFCFix.exe (by niemiro) and save this to your Desktop.
    2. Download SFCFix.zip, and save this to your Desktop. Ensure that this file is named SFCFix.zip - do not rename it.
    3. Save any open documents and close all open windows.
    4. On your Desktop, you should see two files: SFCFix.exe and SFCFix.zip.
    5. Drag the file SFCFix.zip onto the file SFCFix.exe and release it.
    6. SFCFix will now process the script.
    7. Upon completion, a file should be created on your Desktop: SFCFix.txt.
    8. Copy (Ctrl+C) and Paste (Ctrl+V) the contents of this file into your next post for me to analyse please - put [CODE][/CODE] tags around the log to break up the text.


    Once complete you should have a similar result to:

    Code:
    SFCFix version 2.4.3.0 by niemiro.
    Start time: 2015-03-02 11:45:34.056
    Microsoft Windows 8.1 Update 3 - amd64
    Using .zip script file at C:\Users\User\Desktop\SFCFix.zip [0]
    
    PowerCopy::
    Successfully took permissions for file or folder C:\Windows\winsxs\amd64_microsoft-windows-com-dtc-runtime_31bf3856ad364e35_6.3.9600.16384_none_0a1162f033fa01f6\MSDTC.LOG
    
    Successfully copied file C:\Users\User\AppData\Local\niemiro\Archive\winsxs\amd64_microsoft-windows-com-dtc-runtime_31bf3856ad364e35_6.3.9600.16384_none_0a1162f033fa01f6\MSDTC.LOG to C:\Windows\winsxs\amd64_microsoft-windows-com-dtc-runtime_31bf3856ad364e35_6.3.9600.16384_none_0a1162f033fa01f6\MSDTC.LOG.
    
    Successfully restored ownership for C:\Windows\winsxs\amd64_microsoft-windows-com-dtc-runtime_31bf3856ad364e35_6.3.9600.16384_none_0a1162f033fa01f6\MSDTC.LOG
    Successfully restored permissions on C:\Windows\winsxs\amd64_microsoft-windows-com-dtc-runtime_31bf3856ad364e35_6.3.9600.16384_none_0a1162f033fa01f6\MSDTC.LOG
    PowerCopy:: directive completed successfully.
    Next step is to run SFC /SCANNOW and SFCFix again:

    Read More:


    Once SFCFix has completed you should have a text file pop up called SFCFix.txt, if this doesn't open automatically please go to your desktop and open SFCFix.txt.

    The SFCFix results should look a little different this time, it should look similar to:

    Code:
    SFCFix version 2.4.3.0 by niemiro.
    Start time: 2015-02-29 00:08:00.796
    Microsoft Windows 8.1 Update 3 - amd64
    
    
    AutoAnalysis::
    SUMMARY: No corruptions were detected.
    AutoAnalysis:: directive completed successfully.
    
    
    Successfully processed all directives.
    SFCFix version 2.4.3.0 by niemiro has completed.
    Currently storing 0 datablocks.
    Finish time: 2015-03-31 16:54:56.070
    ----------------------EOF-----------------------
    Please try and run Windows update again, if you are still experiencing issues please follow the steps here: Windows Update Forum Posting Instructions if not the issue should be fixed :)

    Thanks,
    Alex
    Last edited by Aura; 01-27-2016 at 07:49 PM.
    Tekno Venus, kettcar, tomliu and 2 others say thanks for this.

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  2. #2

    Re: GUIDE: MSDTC.log corruption (Error 800700A1 when installing KB3000850)

    Admin,

    Can you please re-upload the SFCFix.zip file again as the link is not working, or you can share the script here.
    Urgently in need of this, thanks in advance!

    cheers,
    zhuge

  3. #3
    Sysnative Staff Member
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    Re: GUIDE: MSDTC.log corruption (Error 800700A1 when installing KB3000850)

    The script isn't hosted on Sysnative, but on Go The Power's website which seems down. I'll send him a PM so he can check it out.

    Windows Update Senior Analyst | BleepingComputer Malware Response Team
    If I'm assisting you and I haven't replied to your thread within 3 days, please send me a PM and I'll reply as soon as I see it. Thank you.

  4. #4
    Sysnative Staff Member
    Windows Update Senior Analyst
    Security Analyst
    Aura's Avatar
    Join Date
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    Posts
    8,068
    • specs System Specs
      • Manufacturer:
        Custom
      • Model Number:
        Custom
      • Motherboard:
        ASRock Z77 Extreme4
      • CPU:
        Intel i5 3570k @3.4GHz
      • Memory:
        16Gb DDR3 @800MHz
      • Graphics:
        EVGA NVIDIA GTX 670
      • Sound Card:
        Realtek High Definition Audio
      • Hard Drives:
        120Gb Intel SSD | 2x 1TB WD Black
      • Disk Drives:
        ATAPI iHAS124 C
      • Case:
        CoolerMaster StormTrooper
      • Cooling:
        XIGMATEK Dark Knight Cooling
      • Display:
        24' and 21' Dell
      • Operating System:
        Windows 8.1 Professional 64-bits

    Re: GUIDE: MSDTC.log corruption (Error 800700A1 when installing KB3000850)

    Hi,

    The SFCFix.zip can now be downloaded, and is now hosted on Sysnative directly, so it won't be going away anytime soon.

    Sorry for the delay!

    Windows Update Senior Analyst | BleepingComputer Malware Response Team
    If I'm assisting you and I haven't replied to your thread within 3 days, please send me a PM and I'll reply as soon as I see it. Thank you.

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