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  1. #1
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    Update from 8.1 Pro Failed with error C1901-20017

    To my surprise, my system invited me to update this morning. I backed up my system and started the process. Everything went well - no error messages - but after the final reboot, I was back in 8.1 Pro, just like I started with. Windows Update says "Some updates were not installed". Anyone else run into this issue?

    David

    Edit: Tried it a second time with the same result. I guess I have to wait and see what's up. The MS download servers are running really fast - the 2699 MB download only takes about 15 minutes.

    Further Edit: I downloaded the update software, created an ISO and tried the install from that. Same result, with a slightly different error message: "The installation failed in the SAFE_OS phase with an error during BOOT operation". There are some suggested fixes for the C1900101 error message on the answers.microsoft forum, among them: Disable anti-virus (I am running Windows Defender); disconnect all USB devices (I tried that - same result); disconnect all network connections (!) after the download has completed, reboot lots of times, try again, etc. A few others are reporting this issue. I can't see anything in the system logs other than the message that the Windows 10 update failed.

    I guess I just wait. If anyone runs into a better solution to this issue, please let us know.

    Another edit: MS has a recommendation of trying the install after a clean boot. I did that, and it still fails with the same error message.

    Another Edit: I updated the AMD video drivers to the Win 10 version. The installation still fails with the same error message.
    Last edited by djredfearn; 2015-07-31 at 12:21.

  2. #2
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    Quote Originally Posted by djredfearn View Post
    Further Edit: I downloaded the update software, created an ISO and tried the install from that. Same result, with a slightly different error message: "The installation failed in the SAFE_OS phase with an error during BOOT operation". There are some suggested fixes for the C1900101 error message on the answers.microsoft forum, among them: Disable anti-virus (I am running Windows Defender); disconnect all USB devices (I tried that - same result); disconnect all network connections (!) after the download has completed, reboot lots of times, try again, etc. A few others are reporting this issue. I can't see anything in the system logs other than the message that the Windows 10 update failed.
    Question, you on an SSD? Did you clone it over with Paragon's Migrate OS to SSD 4.0? If so, THAT is the problem. Confirmed by Paragon.

  3. #3
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    Confirmed where? Link please.

    cheers, Paul

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