I have been able to add one shared mailbox as an Exchange account (to solve a searching issue) but the second shared mailbox keeps asking for a password and gives me the sign on error code below: Error Code: 50058 Request Id: 0f28dd50-14e0-41b6-9a70-dd185b88ce00 Correlation Id: a9996544-c996-4c00-88aa-0cfd26c8587d Timestamp: 2024-04-25T20:04:38.871Z The user has full access to the shared box. There is no option to allow me to change the email address to the full access delegated account (when it asks for the password). I tried clearing the stored credentials locally, and that did not work. Any suggestions on how to add this second account?

Hi, According to your description, I conducted a test and the test results are as follows. When adding a second shared mailbox, when prompted for a password, select sign in with another account, and then enter your email address, not the email address of the shared mailbox. Restart Outlook after successful authentication. For exchange online accounts, use Outlook SARA to troubleshoot problems. For details, please refer to <a href="https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsupport.office.com%2Fen-us%2Farticle%2Fabout-the-microsoft-support-and-recovery-assistant-e90bb691-c2a7-4697-a94f-88836856c72f%3Fui%3Den-US%26rs%3Den-US%26ad%3DUS%23%2F%3Fenv%3DExRCA&data=05%7C02%7Cv-xinqiao%40microsoft.com%7Cc7579485914143cc4c9f08dc6e7bcc43%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C638506725212686276%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=PlB9oTgrhtPjnFiEC5ASWO27DEFiapD20mojefxrtUc%3D&reserved=0" rel="ugc nofollow">https://support.office.com/en-us/article/about-the-microsoft-support-and-recovery-assistant-e90bb691-c2a7-4697-a94f-88836856c72f?ui=en-US&rs=en-US&ad=US#/?env=ExRCA It is recommended that others add two shared mailboxes for the same test and observe the results. After the first shared mailbox is successfully added, while keeping other settings unchanged, use a second shared mailbox different from the previous one, then add it to the exchange account, and see the results of the test.

The adding of a shared mailbox as an Exchange account was resolved by resetting the PC and keeping the personal files. Thanks for your help.

unable to add shared mailbox account as an exchange account

Accepted answer

Xintao Qiao-MSFT 475 Reputation points Microsoft Vendor

2024-05-07T11:23:23.1866667+00:00
Hi,

According to your description, I conducted a test and the test results are as follows. When adding a second shared mailbox, when prompted for a password, select sign in with another account, and then enter your email address, not the email address of the shared mailbox. Restart Outlook after successful authentication.

For exchange online accounts, use Outlook SARA to troubleshoot problems. For details, please refer to

https://support.office.com/en-us/article/about-the-microsoft-support-and-recovery-assistant-e90bb691-c2a7-4697-a94f-88836856c72f?ui=en-US&rs=en-US&ad=US#/?env=ExRCA

It is recommended that others add two shared mailboxes for the same test and observe the results.

After the first shared mailbox is successfully added, while keeping other settings unchanged, use a second shared mailbox different from the previous one, then add it to the exchange account, and see the results of the test.
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Chris Helms 20 Reputation points

2024-05-07T12:21:13.8933333+00:00

That option is not available:

Xintao Qiao-MSFT 475 Reputation points Microsoft Vendor

2024-05-08T06:55:06.9533333+00:00

Hi,

It is great to receive your feedback!

Did you test the suggestions I mentioned in last reply?

Has anyone else done the same test and is there also no option to "sign in with another account"?

Have you actually created a second shared mailbox or have you added a second shared mailbox that is different from the previous one?

If none of the above actions resolved your issue, you can use Outlook SARA to further confirm your issue.

Chris Helms 20 Reputation points

2024-05-08T13:21:16.16+00:00

Yes, I have tested this with a different user, and we have the option to sign on as a different user. On that account everything works as expected.

I did not try that on the desktop with the problem but I did try adding her account to a new device and was able to add her account and both shared mailboxes. It would seem there is a problem with her profile, on the local machine, causing the issue.

Xintao Qiao-MSFT 475 Reputation points Microsoft Vendor

2024-05-09T09:42:22.12+00:00

Hi,

Thank you very much for your cooperation.

Based on our previous troubleshooting, I couldn't agree more with you that the problem may be on the local machine.

Whether it's for an Outlook profile or a Windows profile, you can rebuild the profile.

For more information on Outlook profiles see: Create an Outlook profile - Microsoft Support

For more information on Windows profiles see: Fix a corrupted user profile in Windows - Microsoft Support

If none of the above solutions solve your problem, try uninstalling and reinstalling.

If our suggestions can troubleshoot or solve some of your problems for you please click on ACCEPT ANSWER as it could help other members of the Microsoft Q&A community who have similar questions and are looking for solutions.

Xintao Qiao-MSFT 475 Reputation points Microsoft Vendor

2024-05-13T10:27:49.37+00:00

Just checking in to see if above information was helpful.

If the issue has been resolved, please mark the helpful replies as answers.

Chris Helms 20 Reputation points

2024-05-13T16:35:40.4733333+00:00

Thanks for checking. I was only able to access the pc last Thursday, but the issue has not been resolved. I have confirmed it is a Windows profile issue, not an email profile issue. I need to create a new Windows profile, but the link provided for My computer is on a Domain did not work. It continues to login with the old profile. I will need to try something different.

Xintao Qiao-MSFT 475 Reputation points Microsoft Vendor

2024-05-15T10:12:20.3166667+00:00

I am glad we found the problem together. If the previous solution did not solve your problem, we recommend you to reinstall the configuration file. If this does not solve your problem, we recommend you to open a new case and ask for help from a more specialized team. If my solution has inspired you, you can click Accept Answer to help others who are experiencing the same problem as you, thank you very much.

Chris Helms 20 Reputation points

2024-05-17T13:15:04.1733333+00:00

How do I reinstall the configuration file?

Xintao Qiao-MSFT 475 Reputation points Microsoft Vendor

2024-05-20T10:09:10.37+00:00

Hi,

I apologize for the misunderstanding in my previous reply. What I mean by reinstalling the configuration file is actually reinstalling Windows. For more information on reinstalling Windows, you can see: Reinstall Windows - Microsoft Support

If the above does not solve your problem, it is recommended that you seek the help of a more specialized team.

If my solution has inspired you, you can click Accept Answer to help others who are experiencing the same problem as you, thank you very much.

Xintao Qiao-MSFT 475 Reputation points Microsoft Vendor

2024-05-23T09:26:58.79+00:00

Any updates so far? If you have solved your problem, could you share with us? Maybe it will help more people with similar problems. Don't forget to mark it as answer, this will be easy for other community members to find the useful one.
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unable to add shared mailbox account as an exchange account

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