I can't open One Drive. Getting this error message: Can’t reach the shared library “OneDrive”.

Terry Marshall 0 Reputation points
2026-08-17T17:34:01.3666667+00:00

I can't open One Drive.

Getting this error message: Can’t reach the shared library “OneDrive”.
Also this error message: An unknown message has occured (Error code 0x8004016c)

Microsoft 365 and Office | OneDrive | For home | Windows
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Terry Marshall 0 Reputation points
2026-08-19T13:45:59.3833333+00:00

2026 Microsoft one drive error msg not synching solution 0819.pdf2026 Microsoft one drive error msg not synching solution 0819.pdfhi! Ian, thanks for all your time & help!

Unfortunately, the above didn't work for me but you gave me confirmation to delete this file ... PreSignInSettingsConfig.json ... since I worry deleting config files I went back to Microsoft help and this worked

https://support.microsoft.com/home/contact?linkquery=Troubleshoot%20OneDrive%20sync%20problems

one reason I didn't use this earlier is the watch the video has an error message on the Watch the video ... Playback Error We're sorry, but something went wrong.

Here are the steps: I had to put in a pdf - was it included I don't see it - I got this error when trying to put all of the comments in this comment field Please fix the following issues to continue:

We encountered an unexpected error. Please try again later. If this issue continues, please open a ticket at https://sitehelp.microsoft.com.__**

Thanks again for all your help! Should I put this in the your answer section below? Thanks!!**__

https://support.microsoft.com/home/contact?linkquery=Troubleshoot%20OneDrive%20sync%20problems

2026 Microsoft one drive error msg not synching solution 0819.pdf

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  1. Ian-T 11,310 Reputation points Microsoft External Staff Moderator
    2026-08-18T00:03:09.9433333+00:00

    Hi Terry Marshall

    I’m sorry you’re having trouble opening OneDrive. Error 0x8004016c with “Can’t reach the shared library ‘OneDrive’” may indicate that the OneDrive desktop app’s sync connection is stuck or damaged.

    Please try these steps:

    1. Sign in to OneDrive on the web and check whether your files open there. If they do, your files are still available online and the problem is likely limited to the desktop app.
    2. Install all available Windows updates, restart the computer, and make sure OneDrive is up to date.
    3. Reset OneDrive:
      • Press Windows key + R and enter: %localappdata%\Microsoft\OneDrive\OneDrive.exe /reset
      • Press Enter.
    4. If OneDrive does not restart automatically, open Start, search for OneDrive, and launch it.

    Resetting OneDrive does not delete files stored online, but OneDrive will perform a full synchronization afterward.

    If OneDrive also cannot be accessed through the web, please tell us whether you see a different error there, as that would point to an account or service-side issue rather than the Windows sync app.

    Looking forward to your response.

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  2. Terry Marshall 0 Reputation points
    2026-08-18T14:55:24.48+00:00

    I tried C:\Program Files\Microsoft OneDrive\onedrive.exe /reset

    ... Looks like that works - brings me to my onedrive on my surface

    but the icon on the bottom of my screens says ... OneDrive isn't connected ,,, it's spinning Signing in

    Now getting this error message
    Microsoft OneDrive Sorry, there was a problem signing you in ... try again in a few minutes

    Please help - thanks!

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