OneDrive for Mac

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OneDrive for Mac

I had OneDrive for Mac running fine on my MacBook Pro. I changed my Microsoft Account password. Since then, whenever I try to sign in to OneDrive on the Mac, I get an error response that says "Bad Request - Invalid Header." Here is what I have tried:

Signed into my Microsoft Account using Safari--successful.
Reinstalled OneDrive (both the version from Microsoft and from the App Store).
Ran the Reset OneDrive command in the Applications folder.
Flushed my DNS cache.
Deleted all cookies.
Cleared by Safari cache.
Deleted all Keychain entries that relate to OneDrive.
Tried to sign in to OneDrive from both my standard and admin accounts.

Re: item #2, I have tried all the other actions in the list each time I reinstalled OneDrive (four times). Yes, this has taken hours.

I don't know what else to try. Suggestions?

MacBook Pro 13″, macOS 11.2

Posted on Mar 24, 2021 8:21 AM

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Answer 1

ryane77

Community Specialist

Mar 25, 2021 8:43 AM in response to jcb37310

Hi jcb37310,

Thanks for posting! As we understand it, you've been running into some issues with OneDrive on your Mac after changing the password for your account. It sounds like you've done some great troubleshooting already, and have a step that might help you in narrowing this down further.

Have you tried booting your Mac into safe mode yet to test? Knowing how it goes there would rule out a few possible software causes: How to use safe mode on your Mac. Once you start in safe mode, see if you can replicate the behavior there, and feel free to reply back here with the results.

Take care.

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Answer 2

ryane77

Community Specialist

Mar 25, 2021 1:39 PM in response to jcb37310

Hi jcb37310,

Thanks for testing that out! Since the issue is specific to the OneDrive app and started after the account password change, we recommend getting in touch with Microsoft to look into this further: How to contact an app developer

Best wishes.

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Answer 3

jcb37310 Author

Level 1

5 points

Mar 25, 2021 9:28 AM in response to ryane77

Hmmm. I am a reasonably experienced with computers, so I understand that pressing a key during startup can be finicky as to when you press it and when you release it. I cannot boot the 2017 MBP into Safe Mode after trying many times pressing and releasing the Shift key at different times during start-up. Checking the System Report always shows Boot Mode: Normal no matter what I do. Suggestions?

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Answer 4

jcb37310 Author

Level 1

5 points

Mar 25, 2021 1:10 PM in response to jcb37310

I turned off the firmware password and booted into Safe Mode. No change in my problem. When I enter my Microsoft Account email address and press Return to sign in to OneDrive, I get a window that says Error 400, Bad Request - Invalid Header. Any further suggestions would be appreciated.

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Answer 5

jcb37310 Author

Level 1

5 points

Mar 25, 2021 2:35 PM in response to ryane77

Thanks for your help. I've sent Microsoft an email through its general support page. When I use the link you provided in the App Store, I get a 404 error. Apparently Microsoft does not want to be bothered.

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Answer 6

jcb37310 Author

Level 1

5 points

Mar 25, 2021 12:51 PM in response to jcb37310

A little research told me why I cannot Shift boot into Safe Mode. I have a firmware password set.

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OneDrive for Mac

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