Cannot sign into Office 365 apps - Multiple errors

Question

so my boss came back from a small business trip and mentioned his outlook was no longer working. It was stuck in Offline mode and when i clicked on Work Offline to turn that off, it showed trying to connect to server on the bottom bar without change or error pop up. I tried running a quick repair and then a full repair but never got anywhere. Teams also showed a server error. So i uninstalled office and teams and re-downloaded them from office.com under his credentials. When i tried to launch outlook and sign in the first few times, it would ask me for his email address, and then just sit there spinning with no change.

tried rebooting

tried running some tools found online at stack exchange

tried running sfc /scannow for the heck of it

tried a seperate O365 user - same results

tried clearing the advanced settings in internet options - nothing changed

i then tried running the sara tool for outlook and after selecting "this is the device im trying to fix" or whatever it asks, a small pop up window would show for a split second and then dissapear. Im thinking that something is blocking the authentication window from popping up.

after a few more reboots im now getting a 2603 - no network connection error every time i try and sign into office or teams. I have no issue connecting to any site or pinging anything internal or external. Im about to throw this computer agaisnt a wall. It was working fine last week and now this.

EDIT - for the first time i was able to sign into an outlook profile under a Separate windows profile. i will be trying this once i get the user back in the office.

Answer 1

I'm assuming that accessing M365 via a browser (using his account) works fine (from the affected computer, and other computers?)

correct i have them setup now to work on the web with outlook and the web apps. My next attempt was going to be saving their profile elsewere, removing the laptop from the domain, rebooting, re-adding the laptop to the domain, re-sign in with their domain account, pull in all their files.

Answer 2

I'm assuming that accessing M365 via a browser (using his account) works fine (from the affected computer, and other computers?)

Answer 3

Hi JTahan,

Thank you for posting in Microsoft Community, we are glad to assist you here.

Based on your description, we understand you are having sign in issue in Office 365 apps.

Since you have tried a lot of basic troubleshootings but with luck to resolve it, collecting some logs from your side may require to move further on this issue, and we have limit permission to look into it thus, could you please open a support ticket from Microsoft 365 admin center? The resouce there would have permission to check from backend and work with you remotely.

Here are the steps to find itL

1. Go to the admin center at https://admin.microsoft.com. If you get a message that says you don't have permission to access this page or perform this action, you aren't an admin. For more information, see Who has admin permissions in my business?.
2. On the bottom right side of the page, select Help & support.
3. Type a question or keyword into the text box. If you get a drop-down list, select the one closest to your question, or continue typing your question, then press Enter.
4. If the results don't help, at the bottom, select Contact Support.
5. Enter a description of your issue, confirm your contact number and email address, select your preferred contact method, and then select Contact me. The expected wait time is indicated in the Contact support pane.

Thank you for your co-operation and understanding,

Regards,

Microsoft Community

Answer 4

Dear and respected,

Good day!

Thank you for posting to Microsoft Community. We are glad to assist. We are looking into your situation, and we will update the thread shortly.

Appreciate your patience and understanding and thank for your time and cooperation.

Sincerely,

Mia