I am working on a spreadsheet on my iMac and can't save. It seems to signed out of MS 365 after recent renewal. How can I get this signed in?

HanifeM-0763 0 Reputation points
2026-01-11T15:40:37.33+00:00

As well as a new laptop, I have an older iMac and which works fine. After renewing my sub I seemed to be signed out of MS Office on the iMac. I am using Excel and it won't allow me to save because of this issue.

How can I sign back in without affecting my work?

Can't seem to add it to my devices on my account either.

Microsoft 365 and Office | Excel | For home | MacOS
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  1. Q&A Assist
    2026-01-11T15:40:47.8866667+00:00
    AI generated content. This question contains an answer created with AI from Q&A Assist. Learn more

    To sign back into Microsoft 365 on your iMac and resolve the issue with saving your Excel spreadsheet, follow these steps:

    1. Open Excel: Start by launching Excel on your iMac.
    2. Sign Out: If you see your name or profile picture at the top, click on it and select Sign out.
    3. Sign In: After signing out, click on Sign in and enter your Microsoft 365 credentials (make sure you are using your Work or School account).
    4. Check License: Ensure that your Microsoft 365 subscription is active and that your account has the necessary licenses assigned. You might need to check this in the Microsoft 365 Admin Center if you have admin access.
    5. Restart Excel: If you still encounter issues, try closing Excel completely and reopening it to see if the sign-in process completes successfully.

    If you are still unable to save your work after signing in, you might want to check if there are any issues with your account or if the application needs to be reinstalled.


    References:

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  2. Manoel Barros 17,140 Reputation points Independent Advisor
    2026-01-11T16:22:07.5066667+00:00

    Hi! Open Word or Excel, go to Accounts, click Sign In, and log in with your account. If you can't, simply reinstall Office. While you're at it, check if your license has actually been renewed.

    1. Go to https://account.microsoft.com/account?lang=en-us > Sign in with your Microsoft Account > Click on Subscriptions > Expand Microsoft 365 > Click on Install Microsoft 365 apps.
    2. In the Apps folder on your macOS, right-click on Word > Select Move to Trash > Do this with all Microsoft 365 apps (Word, Excel, PowerPoint, Outlook, OneNote...)
    3. Restart your Mac > Install Microsoft 365 (Office) > Sign in with your Microsoft account.
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