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Gernot_Meyer's avatar
Gernot_Meyer
Copper Contributor
Jul 06, 2023

Unable to set permission using ECP. Error 5 Multiple objects with Sid S-1-5-32-544 were found

Hi all,

we are using Exchange 2019 on prem and since a week we are unable to set mailbox permission using ECP in any mailbox: We can open mailbox details but when choosing mailbox delegation, a popup "try again later" is logged. also Event 5 in eventlog is raised with "Multiple objects with Sid S-1-5-32-544 were found".

Powershell is working!

I checked all mailboxes getting permission detailes but I am unable to find any problem.

Any hints?

  • PeteLove's avatar
    PeteLove
    Copper Contributor

    Gernot_Meyer We had this occur with 2 shared mailboxes.  Turns out there were 2 objects for user S-1-5-32-544 and 2 objects for user S-1-5-32-548 using Get-ADPermissions (548 may show up in your event log after you fix the 544 issue).  We used the following to determine the existence of the extra object:

    Get-Mailbox mailboxid | Get-ADPermission -User S-1-5-32-544 | fl extendedrights,accessrights

    which showed 2 objects.  One object was solely for Send As permission.  We used the following to remove the extra object:

    Get-Mailbox mailboxid | Remove-ADPermission -User S-1-5-32-544 -ExtendedRights "Send-As"

    If you still have the error, repeat using SID S-1-5-32-548 or whatever SID is at issue.

  • Hi Gernot_Meyer 

    try below command and check again 

    net stop MSExchangeIS
    net start MSExchangeIS
    iisreset

     

     

     

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    • Gernot_Meyer's avatar
      Gernot_Meyer
      Copper Contributor

      HiDeleted and thanks for answer.

      Server has been rebootet. So that doesn't solve.

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