Login not possible

Question

Since the beginning of the year, I have had the problem that I cannot log into my email account via Outlook. I have contacted Microsoft support several times, and they have repeatedly told me to contact Outlook support directly, but I am unable to do so. I have already cleared my cache several times and tried using other browsers. I have also tried incognito modes, as well as using my cell phone.

 

Whenever I try to log in, I get the following error message:

 

That's why I hope that someone here can help me somehow.

UTC Date: 2026-02-22T02:15:19.184Z Client Id: 7A828C91B2DA4E399FF041930501246B Session Id: 4ec12d8b-3707-444b-9f57-50efe72ef5cf Client Version: 20260213001.06 BootResult: fail Back Filled Errors: None err: System.Runtime.Serialization.SerializationException esrc: StartupData et: ServerError estack: Newtonsoft.Json.JsonSerializationException st: 500 ehk: X-OWA-Error efe: AS4P190CA0013 ewsver: 15.20.9632.15 emsg: ErrorUnexpectedFailure

Answer 1

It seems you are encountering a login issue with your Outlook email account, and the error message indicates a server error. Here are some steps you can take to troubleshoot the problem:

1. Wait and Retry: Sometimes, server issues can be temporary. Wait for a while and try logging in again.
2. Check Service Status: Visit the Microsoft service status page to see if there are any ongoing issues with Outlook or Microsoft 365 services that could be affecting your login.
3. Clear Browser Cache and Cookies: Since you've already cleared your cache, ensure that cookies are also cleared. Sometimes, stale cookies can cause login issues.
4. Use Different Browsers: You mentioned trying different browsers, but ensure they are up to date. If possible, try using a different device to log in.
5. Disable Extensions: If you have browser extensions, especially ad blockers or privacy-focused extensions, try disabling them temporarily to see if they are causing the issue.
6. Check Firewall/Antivirus Settings: Sometimes, firewall or antivirus software can block access to certain services. Ensure that Outlook is not being blocked.
7. Contact Microsoft Support: Since you have already contacted support, consider escalating the issue if you are still unable to log in. Make sure to provide them with the error details you received.

If the problem persists, it may be beneficial to wait for a response from Microsoft support as they may have more specific insights into the server error you're encountering.

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References:

• Why can't I log in to my Outlook account? - Microsoft Q&A
• Cant get into outlook - Microsoft Q&A