Unable to edit and save on excel

Mendez, Andrea 0 Reputation points
2026-07-22T12:59:44.3066667+00:00

I have a student account with UNCW and have been in my program for a year with no issues. My excel assignment will not save nor can I share it. I get an error message when I attempt to sign in. "An unknown error has occurred. The error code is: 0x0"

I have followed the steps provided online and still have this issue. I have also contacted the university.

Microsoft 365 and Office | Excel | For education | Windows
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  1. Tamara-Hu 17,950 Reputation points Microsoft External Staff Moderator
    2026-07-22T13:30:54.32+00:00

    Hello @Mendez, Andrea,   

    Good day! I hope you are doing well.  

    To help provide the most accurate and effective solution for your issue, could you share a bit more detail about your setup:  

    • Are you using Excel Desktop, Excel for the web, or the mobile app?
    • Since your post is tagged under Windows, can you confirm whether you're using the Excel desktop app on Windows? If not, what operating system are you using (macOS, iOS, or Android,...)?
    • Does the error occur when saving all Excel files, or only with this specific assignment workbook?
    • Are other Microsoft 365 services - such as Word, Outlook, or OneDrive - working as expected?
    • Are you saving the file locally on your device, or to OneDrive/SharePoint?
    • You mentioned that you followed troubleshooting steps online. Could you share which steps you've already tried, and if possible, provide a link to the instructions you followed?
    • Do you receive any additional error messages before or after the 0x0 error appears? If possible, please provide a screenshot of the error message (with any personal information removed), this may help us better understand what is happening.

    This additional context will help us understand your environment and the steps already taken so we can tailor the guidance to resolve the issue effectively.  

    In the meantime, if you're using macOS, please note that this is a known issue that can occur with Microsoft 365 or Office licensing. I recommend following the guidance provided by Microsoft, which has helped many users resolve the problem:

    I apologize if I could not jump straight to a solution. I want to avoid suggesting anything that might be inaccurate or unhelpful. Once I have the details above, I’ll be able to assist you more effectively and guide you toward the right resolution.   

    Looking forward to your response so we can get this sorted out for you together.  

    If the answer is helpful, please click "Yes". If you have extra questions about this answer, please click "Comment".   

    Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

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