Getting this error when trying to log into outlook on browser:

jackie patel 20 Reputation points
2025-09-24T15:16:11.3866667+00:00

UTC Date: 2025-09-24T15:13:48.586Z Client Id: E5AE8A950F214153ABEE9BC88D71852F Session Id: d7397b22-12a9-4f1a-ad64-03f13f1e6f1c Client Version: 20250911063.07 BootResult: fail Back Filled Errors: Unhandled Rejection: SyntaxError: Failed to execute 'json' on 'Response': Unexpected end of JSON input:undefined|Unhandled Rejection: Error: 401:undefined|undefined:undefined|undefined:undefined err: Error: 401 esrc: StartupData et: ServerError estack: Error: 401     at Object.w [as createStatusErrorMessage] (https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.fc02d13f.js:1:1039)     at https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.fc02d13f.js:1:170054 st: 401 efe: LO4P123CA0586

Microsoft 365 and Office | Other
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Answer accepted by question author
SD - IA 180.3K Reputation points Independent Advisor
2025-09-24T16:13:30.1666667+00:00

Hi,

I'm Sumit, here to assist with your question.

Apologies for any inconvenience - I'm happy to help you today.

Please try clearing cookies:

On the webpage, click the Lock icon on the browser's address bar on the left.

Click Cookies.

On the popup that opens, remove all cookies one by one, by selecting each cookie and remove the same.

Reload the page and sign in again using the credentials."

I look forward to your response and am eager to collaborate until we find a solution.

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