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I was granted permission to view or manage another mailbox (Shared Mailbox) but whenever I try to open the option "Open Another Mailbox" I get an error.

Anonymous
2023-01-17T01:38:09+00:00

This is the error I'm getting, can anybody help me out? Thanks in advance.

UTC Date: 2023-01-17T01:32:39.333Z
Client Id: 08E2C45961194D269942809980F62EFB
Session Id: cac95e4b-f710-43e5-bef8-73bee65e8084
Client Version: 20230109005.05
BootResult: accessDenied
Back Filled Errors: None
err: Microsoft.Exchange.Data.StoreObjects.AccessDeniedException
esrc: StartupData
et: ServerError
estack: Microsoft.Mapi.MapiExceptionNoAccess
st: 500
ehk: X-OWA-Error
efe: SN7PR04CA0208, SG2PR02CA0021
ebe: SA1PR17MB4657
ewsver: 15.20.5986.23
emsg: ErrorPermissionDenied
Outlook | Web | Outlook.com | Account management, security, and privacy

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  1. Ron-6928 4,991 Reputation points
    2023-04-05T15:41:06+00:00

    I just tried opening John's mailbox. I can open it just fine now. I can open the mailbox by "Add shared folder or mailbox" or by "Open another mailbox". Both work fine.

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  2. Ron-6928 4,991 Reputation points
    2023-04-05T15:37:06+00:00

    That should work fine too.

    How did you grant yourself permission to access the shared mailbox?

    I have Exchange plan 1 subscription and here's how I do it. I go to Exchange admin center at https://admin.exchange.microsoft.com/#/mailboxes

    Open the (shared) mailbox, click Delegation:

    Click Edit and add my name to grant myself full access to the mailbox.

    Try removing full access permission. Wait for a few minutes. Grant the permission back on after waiting x minutes. Wait a bit longer before attempting to open the shared mailbox.

    For your info, I granted myself permission to one of my users mailbox earlier today (let's call it John Doe's mailbox). I was able to open John's mailbox. I then remove the full permission when I'm done testing.

    A few minutes ago, I granted myself full access permission to that same John Doe's mailbox. Now I can't open John's mailbox. I got an error just like they one Yvette posted. Perhaps I should wait a little longer. I'll try again in a few minutes.

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  3. Anonymous
    2023-04-05T14:32:00+00:00

    Using Outlook web access. I'm an IT admin and have checked that I have all permissions (mailbox and calendar) and still get this message when attempting to access one of my members Outlooks.

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  4. Anonymous
    2023-01-17T04:49:42+00:00

    Thanks for responding, usually how long does it take to be fixed? Just wondering that way I can report it to the account manager as well.

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  5. Anonymous
    2023-01-17T02:10:40+00:00

    Hello ! I'm sorry that you are experiencing this issue, and I am hopeful that I will be able to help you find a satisfactory solution.

    This is a recent bug and it has been noticed by many user, I believe Microsoft are aware of this issue and it will be resolved in due time. All I would advise now is to bare little patience.

    Thanks

    Nelson...

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