Onedrive - Business - In "Credentials Needed" hell

After using Office365 professional for a year, yesterday I became unable to sync new or changed files.

Two things occurred that could be part of the problem:

1. I logged into to portal.office.com as one of my colleagues to test permissions correctly.
2. I ran the routine MS Windows 10 updates.

I can sync-to-local any files that were already in Onedrive and/or a SharePoint site.
I can load new files to Onedrive via browser.

I cannot sync any new files...whether stored locally to push to onedrive  or put in onedrive via browser to then sync to local drive.

Opening the local file then saving it saves it locally but at the next sync it fails with the "Credentials needed" Sync Problem. Opening it from browser causes same outcome.

screenshot of problem
I am a highly knowledgeable computer user (Server 2012 is running in my basement), but this one  has me totally bamboozled.

I have done all the instructions here, twice.

https://support.office.com/en-sg/article/Fix-OneDrive-for-Business-sync-problems-e12c6a8b-4bbe-4391-9c23-1a52b55a1967?ui=en-US&rs=en-SG&ad=SG

I've done the manual cache/local store and browse cache clearing so many times it hurts.

I did one additional step, (not offered by MS above) by disconnecting and reconnecting my office365 account in one of the Office Apps.
kflorianAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

kflorianAuthor Commented:
<insert lots of swear words here>

https://portal.office.com/admin/default.aspx#@/Support/CreateServiceRequest.aspx?i=TB&s=sharepoint online

<insert lots of swear words here>

TAG NOT CLOSED PROPERLY
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
David Johnson, CD, MVPOwnerCommented:
check your control panel / credentials and remove your colleagues credentials and replace them with yours
0
kflorianAuthor Commented:
I found the solution before I received an answer.
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Office 365

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.