missing api-ms-win-core-libraryloader-l1-1-1.dll preventing me from upgrading to windows 10

Anonymous
2017-12-19T17:27:14+00:00

I'm currently on windows 7 and whenever I run Windows 10 upgrade assistant it gets to 99 then tells me I'm missing api-ms-win-core-libraryloader-l1-1-1.dll. I've tried running it on a clean boot, I've ran system cleanups to repair any corrupt files, I tried removing my antivirus, and still it won't work.

Does anyone have any other methods to fix so I can upgrade? any help appreciated!

Windows for home | Previous Windows versions | Install and upgrade

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  1. Anonymous
    2017-12-30T21:51:32+00:00

    This is the last day and I got the Solution.

    1. Go to Local Disk C -> Windows -> System32and search for **'WIMG'**and copy the file.
    2. Paste it in the WindowsUpdate folder in C.
    3. Start the updater and problem will be solved.

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  2. Anonymous
    2017-12-28T13:16:21+00:00

    11111111

    I had the same "api-ms-win-core-libraryloader-l1-1-1.dll" missing issue 

    when upgrading Windows 7 to Windows 10 

    and finally I saw your post and tried fixing the problem 

    by "Replacing 

    C:\Windows10Upgrade\wimgapi.dll with the one from C:\Windows\System32\wimgapi.dll". It works.

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  3. Anonymous
    2017-12-31T02:57:31+00:00

    Hi - You need to go to the 1st reply under this thread that mentions copying & pasting a dll file & follow the instructions.  Its a matter of replacing the windows 10 Upgrade file with the regular Windows dll file of the same name.  Just a simple copy & paste.  I followed the procedures & it worked.  You do this copy/paste (replace) of the file when the 10 update errors out.  Then copy/paste (replace) the file and hit "try again".  The windows 10 update will run smoothly afterwards.  I am sorry but I did this several nights ago & forgot the exact name of the file but it is in the error code thread.

    Good Luck!

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  4. Anonymous
    2017-12-25T17:04:38+00:00

    Thank you for fix to issue.  Merry Christmas

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  5. Anonymous
    2017-12-21T17:21:37+00:00

    This worked like a charm & now upgraded from Windows 7 32-bit to Windows 10 32-bit - with NO apparent issues.

    Question: Since I replaced the wimgapi.dll that came with Windows 10 with the Windows 7 version of it, should I go and put the Windows 10 version of wimgapi.dll In System32 folder? If so, I no longer have the Windows 10 version of wimgapi.dll and wondering where to get it.

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