You're most welcome. I'm glad to help.
SyntaxError: Failed to execute 'json' on 'Response': Unexpected end of JSON input:undefined|Unhandled Rejection: Error: 401
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(128, 8%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
Anonymous
Hello,
I've got an issue with my connection to outlook :
UTC Date: 2025-07-10T13:31:59.643Z
Client Id: CA7E21AFA9D54550BD8291E973A1A53D
Session Id: b9d8f227-f948-47ac-8f94-9921966858d7
Client Version: 20250704003.04
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.5ec1239e.js:1:1039](https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.5ec1239e.js:1:1039 "res.public.onecdn.static.microsoft"))
at [https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.5ec1239e.js:1:163185](https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.5ec1239e.js:1:163185 "res.public.onecdn.static.microsoft") st: 401
efe: PR1P264CA0181
It's the same on laptop, iphone or any other device,
Could you help me ?
Regards,
Justine
Outlook | Windows | Classic Outlook for Windows | For business
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3 answers
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Anonymous
2025-07-10T15:37:43+00:00 Thnak you, so i'll wait for the "comeback" (sorry for my bad english)
Regards,
Justine
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(89.60000000000001, 18%, 18%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EJD%3C/text%3E%3C/svg%3E)
John DeV 161.8K Reputation points Independent Advisor2025-07-10T14:17:53+00:00 Hi, good day! I'm John Dev a Windows user like you and I'll be happy to assist you today. I know this has been difficult for you, Rest assured, I'm going to do my best to help you.
Outlook is currently down, and several users are experiencing the same issue. Microsoft is aware of this and is working on a fix.
You can check the status in the link below.
https://portal.office.com/servicestatus
Under "Microsoft consumer products", click "Show products"
Kind regards,
John DeV
Independent Advisor