Error 500: Repeating redirects detected - Outlook Online

Hudson 41

Trying to access a mailbox through the Outlook online version. Been trying to find a working solution on the internet for 3 days now. Seems only non-chromium browsers work (Such as IE). Doesn't work on Edge, Chrome, Firefox, Brave etc. This issue only just appeared last Friday and didn't exist before. Haven't changed any settings whatsoever on the account. Account has Microsoft 365 Business Standard License I've tried: - Incognito/InPrivate - Clearing cookies/site data - Made sure system time was correct and in sync - On MS Word > File > Info > Access this account on the web - Updated Browsers ![65575-thumb-image001.png][1] [1]: /api/attachments/65575-thumb-image001.png?platform=QnA

Jade Liang-MSFT 9,981 Reputation points Microsoft Employee

2021-02-11T10:50:42.327+00:00

Considering your issue may be more related to Microsoft 365 account in outlook for web, please kindly understand here we mainly focus on general issue on Outlook for windows, so I modified your tag, thanks for your understanding and hope your issue would be resolved soon.
Andrew 0 Reputation points

2023-06-06T16:58:24.1766667+00:00

One of our users ran into the same issue.

There is no roles assigned to this user to begin with. It is probably an issue caused by server (Error 500).

On Firefox browser this issue didn't occur. I just cleared browser history and so far there's been no issues on Microsoft Edge.
Andrew Bienhaus 106 Reputation points

2023-09-26T12:16:24.9233333+00:00

This issue, affects ourlook 365 as well. When this symptom is present in Outlook online, Outlook 365 also will not connect.
Prajwal Desai [MVP] 101 Reputation points

2023-11-13T18:26:01.5333333+00:00

You'll have to clear the cookies as well.
Deleted

This comment has been deleted due to a violation of our Code of Conduct. The comment was manually reported or identified through automated detection before action was taken. Please refer to our Code of Conduct for more information.
Gerardo Mojica 0 Reputation points

2024-06-06T18:43:41.94+00:00

I had the same issue. I did remove a few roles from my account.

It worked!
NS 0 Reputation points

2025-01-03T05:10:34.6933333+00:00

Hi @Prajwal Desai [MVP] what if the issue is not limited to admins rather to users and have done all the solutions mentioned here. Has there been any new solution to this issue?

3 answers

Tuan, Pham Minh 381 Reputation points

2021-06-24T06:37:26.107+00:00
If your user is assigned too many roles, the Office portal can lose its cool and get into an endless redirect loop. By ‘too many roles’, I mean your Microsoft 365 user account has been assigned too many admin roles. Fortunately, this is an easy issue to resolve — depending upon how your Microsoft 365

Click ‘Manage roles’ under the heading ‘Roles’

Remove all admin roles other than ‘Global Administrator’ and click ‘Save changes’
Please sign in to rate this answer.

76 people found this answer helpful.
Tupelo Support 6 Reputation points

2021-07-07T09:12:31.487+00:00

Thank you TuanPhamMinh-8038, this has resolved the issue. It appears that the older Office 365 admin user accounts had as many as 40+ admin roles. Once I removed all of these roles (except the Global Admin) role, I was able to assign all of the new 7 admin roles, to give the user full admin access.

Philippe Meister 1 Reputation point

2021-08-03T18:18:56.557+00:00

That also helped me a lot. Thank you @Tuan, Pham Minh

Jan Nijkamp 1 Reputation point

2021-08-04T12:48:29.047+00:00

This did it for me.
Thanks for the solution

Reza Molavi 41 Reputation points

2021-08-13T22:03:42.34+00:00

TuanPhamMinh,
Thank you very much. You solved a problem no Microsoft tech has been able to solve for a year. I salute you.

caliber08 1 Reputation point

2021-08-26T11:35:23.287+00:00

Than you this was my issue. The previous admin when creating my account selected EVERYTHING. Thank you for your input!!!

Martin Müller-Lindenlauf 1 Reputation point

2021-09-27T16:26:33.493+00:00

You made my day. Thanks a lot!

Peninsula Pool Supplies 1 Reputation point

2021-10-05T03:17:03.067+00:00

Thanks for your help!

SvendatLink 1 Reputation point

2021-10-22T00:57:31.417+00:00

That did the trick. I now remember a while back where, out of frustration, I assigned myself every damn role under the sun. It didn't fix my problem back then and obviously signed me on for extra issues.

Thanks Heaps for posting

finova-Johnny 41 Reputation points

2022-03-01T09:06:25.763+00:00

I have got the same with a X-Redir-Error, You solved the problem

you made my day ! thanks you so much

John Shelburne 6 Reputation points

2022-04-22T22:10:31.737+00:00

@Tuan, Pham Minh

YOU ARE A ROCKSTAR!!!!!!!!

I HAVE SPENT A WEEK TRYING TO FIGURE THIS OUT AND YOUR ANSWER SOLVED IT!

Beck Navalón 1 Reputation point

2022-10-15T20:38:54.867+00:00

Hola! So simple, yet is THE solution!! Not just for this Outlook issue, also for a sleep depriving issue we were having with Teams and other apps logins (web and desktop app, mainly on Mac computers). So, thank you very much! Gracias!

Silviu Dobrica 1 Reputation point

2022-11-02T09:58:01.713+00:00

I cannot believe I have been troubleshooting ADFS like crazy when this was the issue all along...
Thank you very much for clearing this issue up!

Jaliya 1 Reputation point

2023-01-03T05:05:41.137+00:00

Awesome Fixed.. Thank you very much.
But isn't this supposed to be fixed by Microsoft?

holpalm 15 Reputation points

2023-02-03T18:40:22.57+00:00

TuanPhamMinh,

You are the BEST! This error has been causing me headaches for MONTHS, and no one at Microsoft could fix it. You solved my problem in less than 5 minutes. Thank you!

Carlos Meirelles 0 Reputation points

2023-02-04T07:52:54.96+00:00

Thanks @Tuan, Pham Minh

Olufemi Bakare 0 Reputation points

2023-03-04T10:21:59.62+00:00

You are a life saver

IT Support 0 Reputation points

2023-03-21T13:49:52.78+00:00

Tuan, we are now in 2023 and you're still right on point. This is the absolute fix, when all the other options didn't work. Thank you so very much for solving my issue.

Tor Valstrom 0 Reputation points

2023-03-21T15:31:05.2433333+00:00

bingo! Thank you Pham!!!

Mario Angotti 0 Reputation points

2023-03-30T18:44:21.4366667+00:00

I am experiencing this issue with the primary admin account for the domain. When I attempt to remove all roles except the Global Administrator, they are greyed out and cannot be unchecked.

Please advise an alternate solution if possible.

Marshal Adebola 0 Reputation points

2023-04-19T10:26:07.98+00:00

Please accept my appreciation, It works.

Anonymous

2023-04-24T14:22:03.7433333+00:00

I've got this with one of our users and they don't have any roles assigned...

Beybin Esen 0 Reputation points

2023-06-16T09:13:21.7233333+00:00

You are the best. Thank you. It worked for us!

Admin 0 Reputation points

2023-06-21T05:58:09.3266667+00:00

thank you this worked for me .

Andrey Tskhay 0 Reputation points

2023-07-04T18:20:45.9566667+00:00

You can't believe how much you helped me with this annoying issue! I would give 100 likes if I could.

David Borja 0 Reputation points

2023-08-13T16:06:22.5066667+00:00

Thanks for the solution. 5 days with the problem and solved with this.

Agricio Penna 0 Reputation points

2023-09-29T14:38:12.29+00:00

Thank you very much! Worked for me.

Adam at MEDENTek 0 Reputation points

2023-10-05T14:01:08.3366667+00:00

I owe you a beer! ...or a case of beer.

Prajwal Desai [MVP] 101 Reputation points

2023-11-14T19:22:32.54+00:00

You are right. Assigning too many roles can cause this issue. However this issue also appears when the exchange online license isn't assigned to the account. I have described several troubleshooting steps in this article, I hope it will help many - https://www.prajwaldesai.com/fix-outlook-error-500-mailbox-not-found/

Deleted

This comment has been deleted due to a violation of our Code of Conduct. The comment was manually reported or identified through automated detection before action was taken. Please refer to our Code of Conduct for more information.

Daniel Munitz 0 Reputation points

2024-01-03T23:42:27.46+00:00

This actually worked. Thank you so much!

Sher Abbas Khan 0 Reputation points

2024-01-09T12:19:48.67+00:00

This has worked for me, thanks for your help

Duncan Millard 0 Reputation points

2024-01-27T16:43:53.9633333+00:00

THANK YOU! Solved my problem.

Muhammad Arsalan Siddiqui 0 Reputation points

2024-01-28T06:56:05.1366667+00:00

Thanks mate

Deleted

This comment has been deleted due to a violation of our Code of Conduct. The comment was manually reported or identified through automated detection before action was taken. Please refer to our Code of Conduct for more information.

Cheikh Tidiane NDOME 0 Reputation points

2024-02-27T15:53:53.52+00:00

Very Helpful this resolve my issue. i had the same error when I try to login on outlook online

Cristhian González 0 Reputation points

2024-03-14T14:02:31.6866667+00:00

Thanks for your help! It is wonderful

Atty Dan Rayo 0 Reputation points

2024-04-20T06:25:32.4333333+00:00

This is very helpful! I solved the problem. I have been assigned too many roles in the past; now, I have removed inactive accounts with admin roles. Thank you!

Mary Mick 0 Reputation points

2024-05-24T19:18:17.45+00:00

THIS WORKED! Thank you! Fixed it immediately.

Hans Luna 0 Reputation points

2024-07-01T07:30:54.8233333+00:00

thanks a lot you saved me a lot of time and problems :)

Craig Becerril 0 Reputation points

2024-08-06T19:30:58.42+00:00

Wow, I have been dealing with this issue off and on for MONTHS with a test account I use. This was 100% the cause and solution, THANK YOU.

New Hoong Fatt Auto Supplies Sdn Bhd 0 Reputation points

2024-08-26T00:45:40.8+00:00

Thanks a lot!

Mike Dixson 0 Reputation points

2024-09-02T10:10:56.7366667+00:00

Thank you. I went thru removing roles one by one and testing after each one.
Removing the Power Platform Administrator role was the golden ticket for me! Thanks for your help!

Brett B 0 Reputation points

2024-09-11T13:06:16.14+00:00

Thank you, this fixed the problem for after a whole day of trying stuff.

Shree Raj Shrestha 0 Reputation points

2024-10-06T08:17:54.3633333+00:00

You deserve a medal, here's one from me 🥇 - the medal of appreciation

Amir Zafar 0 Reputation points

2024-10-24T17:35:37.7966667+00:00

Thank you! It worked.

Christian Gustafson 0 Reputation points

2024-11-20T00:59:44.03+00:00

This fix worked for me. Thanks for saving me hours of Microsoft MS365 frustration and heartache.

Prageeth Thrikawala 5 Reputation points

2025-01-20T00:28:31.01+00:00

Thank you. This answer saves me hours of additional work.
Sign in to comment

Use comments to ask for clarification, additional information, or improvements to the question.
Steven Overloop 5 Reputation points

2024-08-12T11:27:12.97+00:00

I just had this issue with a user who had no admin roles assigned. It wasn't browser related either, as it happened on several browsers on several computers. Delegates also couldn't access the mailbox and outlook also wasn't working.

The solution was to remove the exchange license, wait until the mailbox disappeared from exchange online and then reassign the license. After that the issue was resolved.
Please sign in to rate this answer.

1 person found this answer helpful.
Rafael Santini 0 Reputation points

2024-11-22T15:03:31.5833333+00:00

Thank you for this, the solution work perfect for me!
Sign in to comment

Use comments to ask for clarification, additional information, or improvements to the question.
Jade Liang-MSFT 9,981 Reputation points Microsoft Employee

2021-02-09T08:56:56.153+00:00

Hi anonymous user,
Welcome to our forum.
For your error, I have researched a lot and found a similar thread, which mentioned changing the data/time settings in your computer may work for it, please check if it could also be helpful to you.

If that's invalid, please kindly understand here we mainly focus on general issue about Outlook desktop client,considering your issue may be more related to your O365 account in browser, in order to solve it better, it's suggested to post a new thread in this dedicated forum.

The reason why we recommend posting appropriately is you will get the most qualified pool of respondents, and other partners who read the forums regularly can either share their knowledge or learn from your interaction with us. Thanks for your understanding and hope your question will be resolved soon.

If the response is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.
Please sign in to rate this answer.

0 comments No comments
Sign in to comment

Use comments to ask for clarification, additional information, or improvements to the question.

Share via

Error 500: Repeating redirects detected - Outlook Online

3 answers

Your answer