UserHasNoMailboxAndNoLicenseAssignedError

Boopathi S 4,036

Hello,

One of the user login to Edge using Outlook Web Mail. He gets the below message

UTC Date: 2022-11-08T11:06:40.946Z
Client Id: C9B2F3E32B2D4BA8AE7A4835BE8508DD
Session Id: fbf1f235-0a08-4547-a07e-4d6127c68587
Client Version: 20221028006.04
BootResult: configuration
err: Microsoft.Exchange.Clients.Owa2.Server.Core.OwaUserHasNoMailboxAndNoLicenseAssignedException
esrc: StartupData
et: ServerError
estack: Error: 500
at f (https://outlook.office365.com/mail/:10:267321)
at https://outlook.office365.com/mail/:10:275782
st: 500
ehk: X-OWA-Error
efe: AM5PR0602CA0021
ebe: AM6PR07MB5731
emsg: UserHasNoMailboxAndNoLicenseAssignedError

I can login with my mail address in EDGE. Same user able to login to Outlook Web Mail using Chrome Browser.

Once mail address entered in the OutlookWebAccess in EDGE the Select Next. It does not prompt to enter the password.

EDGE Browser Histroy is cleared and tried

Please help

AMSTERDAM MUSIC 0 Reputation points

2023-07-04T16:19:25.4233333+00:00

ola boa tarde! nao consigo acessar a minha conta do outlook , quando entra esta aparecendo uma imagem cheio de codigos
Helen Basilan 5 Reputation points

2023-08-22T04:39:45.3+00:00

Hi,

I have the same problem. The company I work with assigned me an email in outlook, but I can not open the mail and have been getting this message instead. Kindly help. Thanks.
Mungarra 0 Reputation points

2024-12-12T21:59:23.6966667+00:00

I am having this same issue. How can I fix it please??
Abdelghaffare Mason 0 Reputation points

2025-07-10T14:32:41.66+00:00

Bonjour j ai le même problème aidez moi s'ils vous plait.

Answer accepted by question author

Aholic Liang-MSFT 14,011 Microsoft External Staff

Hi @Boopathi S ,

Thanks for helping me.
AmbientAuthenticationInPrivateModesEnabled value is changed from 1 to 0 under HKEY_LOCAL_MACHINE\ Software\Policies\Microsoft\Edge which fixed the issue

Great to know that you've already thought of a solution and really appreciate it for your sharing!
By the way, since the Microsoft Q&A community has a policy that "The question author cannot accept their own answer. They can only accept answers by others.". and according to the scenario introduced here: Answering your own questions on Microsoft Q&A, I would make a brief summary of this thread:
[UserHasNoMailboxAndNoLicenseAssignedError]

Issue Symptom:

The mailbox has a license assigned and can successfully sign in to Chrome on the same computer.
And logged in on another computer very well.
Uninstalled EDGE and installed
Then mail works in OWA
But it does not work in InPrivate EDGE Mode. It gives the below message.
Client Id: C9B2F3E32B2D4BA8AE7A4835BE8508DD
Session Id: fbf1f235-0a08-4547-a07e-4d6127c68587
Client Version: 20221028006.04
BootResult: configuration
err: Microsoft.Exchange.Clients.Owa2.Server.Core.OwaUserHasNoMailboxAndNoLicenseAssignedException
esrc: StartupData
et: ServerError
estack: Error: 500
at f (https://outlook.office365.com/mail/:10:267321)
at https://outlook.office365.com/mail/:10:275782
st: 500
ehk: X-OWA-Error
efe: AM5PR0602CA0021
ebe: AM6PR07MB5731
emsg: UserHasNoMailboxAndNoLicenseAssignedError

The Solution:
AmbientAuthenticationInPrivateModesEnabled value is changed from 1 to 0 under HKEY_LOCAL_MACHINE\ Software\Policies\Microsoft\Edge which fixed the issue

----------

You could click the "Accept Answer" button for this summary to close this thread, and this can make it easier for other community member's to see the useful information when reading this thread. Thanks!

CHRISTOPHER BUZYNSKI 0 Reputation points

2025-09-08T17:56:16.9533333+00:00

How do I get to a place where I can change the value from 1 to 0?

12 additional answers

Boopathi S 4,036 Reputation points

2022-11-21T12:43:11.947+00:00

Hello @Amit Singh @Aholic Liang-MSFT

Thanks for helping me.

AmbientAuthenticationInPrivateModesEnabled value is changed from 1 to 0 under HKEY_LOCAL_MACHINE\ Software\Policies\Microsoft\Edge which fixed the issue
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Amit Singh 5,326 Reputation points

2022-11-18T11:33:14.477+00:00

The error message "UserHasNoMailboxAndNoLicenseAssignedError" indicates that this is a license issue. It could be that the admin has not assigned an Exchange online license to your account yet, or in some cases, it could be that your admin has changed in license settings lately. Since this is a license-related issue, unfortunately, the only way to go about this is by reaching out to your admin.

Please refer to this article: https://answers.microsoft.com/en-us/msoffice/forum/all/something-went-wrong-we-couldnt-find-a-mailbox-for/6480660c-db0d-4c2f-b04d-9e01ab2a4f3d
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Ali Wahcantt 5

UTC Date: 2025-07-10T10:55:47.624Z
Client Id: C27C26952E9D46458648AB94E9828644
Session Id: 3007424f-a277-407f-b599-0fdc96b4125e
Client Version: 20250704003.04
BootResult: fail
Back Filled Errors: Unhandled Rejection: Error: 401: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)
    at https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.5ec1239e.js:1:163185
st: 401
efe: DX0P273CA002

we are facing this above issue.

kindly fix it this problem ASAP.

Dan Hardy 0

UTC Date: 2025-07-10T11:23:46.922Z
Client Id: B723E0A670CC431D9EB196460BBC98F6
Session Id: d402f995-ce7d-4e15-af7e-bf0762fa8de8
Client Version: 20250620014.20
BootResult: fail
Back Filled Errors: Unhandled Rejection: Error: 401: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.ad3a7e4e.js:1:1039)
    at https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.ad3a7e4e.js:1:161561
st: 401
efe: LO4P123CA0522

Dan Hardy 0 Reputation points

2025-07-10T12:00:10.45+00:00

Unfortunately this afternoon i cannot log in to my email as this error message occur's even thought it was working all week until today?

lisa 0

UTC Date: 2025-07-10T12:02:05.785Z
Client Id: 2C1150999FCD40D8A4B3CAE6C34082A7
Session Id: 01e89b7d-f88d-4be4-83ab-c272dff06df4
Client Version: 20250620014.20
BootResult: fail
Back Filled Errors: Unhandled Rejection: Error: 401: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.ad3a7e4e.js:1:1039)
    at https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.ad3a7e4e.js:1:161561
st: 401
efe: FR3P281CA0131

at Object.w [as createStatusErrorMessage] (https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.5ec1239e.js:1:1039)

at https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.5ec1239e.js:1:163185
```st: 401

efe: DX0P273CA002

lisa 0 Reputation points

2025-07-10T12:08:03.46+00:00

I can’t log into my email, even with a different browser or the app on my phone.
Zakariae SGHIOURI 0 Reputation points

2025-07-10T12:27:46.98+00:00

Also, i can't have access to my email, i tried to many solutions but i still cant have access
Dan Hennessey 0 Reputation points

2025-07-10T12:53:11.9866667+00:00

I am facing the same issue. I tried logging in on my app, my home computer and my work computer. I used InPrivate/ Incognito as well. Nothing is working
Dan Hennessey 0 Reputation points

2025-07-10T12:57:15.21+00:00

All of the sudden, everything is working now. My email works on APP on my phone. Was this a glitch of some kind?
Alex Tsai 0 Reputation points

2025-07-10T13:30:04.93+00:00

same thing, still cant login. my outlook account is fine though but hotmails isnt
Abdelghaffare Mason 0 Reputation points

2025-07-10T14:33:33.88+00:00

Bonjour j ai le problème aussi aidez moi s'ils vous plait
Abdelghaffare Mason 0 Reputation points

2025-07-10T14:37:22.2066667+00:00

Bonjour j ai problème car je ne peux pas y accéder à messagerie boîte email .aidez moi s'ils vous plait

JJ 0

having the same issue, please fix this

UTC Date: 2025-07-10T14:49:09.521Z
Client Id: 901F4E32B2AE49249FC0E1B7B1C4CBBD
Session Id: 07d66112-b8f6-4c15-81c6-7e04be3db8c4
Client Version: 20250620014.20
BootResult: fail
Back Filled Errors: Unhandled Rejection: Error: 401: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.ad3a7e4e.js:1:1039)
    at https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.ad3a7e4e.js:1:161561
st: 401
efe: SJ0PR03CA0279

Aholic Liang-MSFT 14,011 Reputation points Microsoft External Staff

2022-11-09T06:07:13.517+00:00

Hi @Boopathi S ,

Same user able to login to Outlook Web Mail using Chrome Browser.

Have you tried to log in to this account using the private window and does the error persist?
If yes, please try logging in with another computer to see if it can work.

If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
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Boopathi S 4,036 Reputation points

2022-11-09T07:08:28.657+00:00

@Aholic Liang-MSFT

Thanks for the reply.

Have you tried to log in to this account using the private window and does the error persist? What is Private Window here?

Do you want me to try the same mail address in EDGE IN PRIVATE mode in different computer?

Please let me know

Aholic Liang-MSFT 14,011 Reputation points Microsoft External Staff

2022-11-09T07:47:57.657+00:00

Hi,
You can open an InPrivate window in the Microsoft Edge in different ways:

Select and hold (right-click) the Microsoft Edge logo in the taskbar and select New InPrivate window.

In Microsoft Edge, select and hold (right-click) a link and select Open link in InPrivate window.

In Microsoft Edge, select Settings and more > New InPrivate window.
Then log in to Outlook Web Mail with the account that received the error to see if the error persists.

Boopathi S 4,036 Reputation points

2022-11-11T08:44:28.293+00:00

Yes The error occurs in IN PRIVATE mode as well.

Aholic Liang-MSFT 14,011 Reputation points Microsoft External Staff

2022-11-15T09:25:54.31+00:00

Hi,

Same user able to login to Outlook Web Mail using Chrome Browser.

Are you trying to sign in on another computer? Can this account still only be signed in in Chrome Browser?

Boopathi S 4,036 Reputation points

2022-11-15T13:39:13.13+00:00

@Aholic Liang-MSFT Thanks for your reply

User logs in to other computers as well. Then logoff once they moved out from the computer
Below tests performed today
Uninstalled EDGE and installed
Then mail works in OWA
But it does not work in InPrivate EDGE Mode. It gives the below message.

Any setting to be changed to fix the issue.

Client Id: C9B2F3E32B2D4BA8AE7A4835BE8508DD
Session Id: fbf1f235-0a08-4547-a07e-4d6127c68587
Client Version: 20221028006.04
BootResult: configuration
err: Microsoft.Exchange.Clients.Owa2.Server.Core.OwaUserHasNoMailboxAndNoLicenseAssignedException
esrc: StartupData
et: ServerError
estack: Error: 500
at f (https://outlook.office365.com/mail/:10:267321)
at https://outlook.office365.com/mail/:10:275782
st: 500
ehk: X-OWA-Error
efe: AM5PR0602CA0021
ebe: AM6PR07MB5731
emsg: UserHasNoMailboxAndNoLicenseAssignedError

Aholic Liang-MSFT 14,011 Reputation points Microsoft External Staff

2022-11-18T07:27:07.903+00:00

Hi，

User logs in to other computers as well.
Uninstalled EDGE and installed
Then mail works in OWA.
But it does not work in InPrivate EDGE Mode.

Can this user currently only log in outside of InPrivate EDGE mode on this computer?
Can you successfully log in in Edge InPrivate mode on another computer ? Or can you log in successfully in normal mode in this computer?

In my opinion, it could be caused by the cache of the privacy not completely cleared, if the problem is only in Edge privacy mode in this computer.
Are you using RDS environment?
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UserHasNoMailboxAndNoLicenseAssignedError

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