I can sign in to my 365 account and can access my email, but I can't sign into my Excel.

Question

I can sign into my 365. account & I can access my emails, but I am unable to sign into my Excel.

Answer 1

On Windows, Excel uses the account that is signed into the Office apps, which can differ from the account used in the browser.

To sign in to Excel on Windows:

1. Open Excel and create or open any workbook.
2. Select File > Account (in Outlook it is Office Account, but in Excel it is Account).
3. Under User Information, select Sign In (or Switch account if a different account is shown).
4. Enter the same email address and password that are used to sign in to Microsoft 365 on the web.

If sign-in still fails in Excel but works on the web, verify the account and subscription:

1. In a browser, go to www.microsoft365.com and select Sign In.
2. Confirm that the same account has the Microsoft 365 or Office subscription that should activate Excel.

If Excel continues to reject the sign-in, make sure the correct account is used and that the username/password work in the browser as described above. If necessary, sign out of any other Office accounts in File > Account and sign back in with the correct one.

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References:

• Sign in to Microsoft 365
• About accounts in Office
• Video: Sign in to Office
• What you can do in the Microsoft 365 apps on mobile devices with a Microsoft 365 subscription
• How to fix the issue with MS Office asking you to log in every time you open an Office app - Microsoft Q&A