Add-PublicFolderClientPermission: Object reference not set to an instance of an object.
Running into an issue with adding public folder permissions in Exchange Online. I've used this PowerShell script for a few years without any issues, but suddenly getting this error no matter what I try. I do have Owner permissions and there are Default and Anonymous permissions on the public folder, tried completely removing and reinstalling the ExchangeOnlineManagement module as well. Anyone else having this problem? $PF = Get-MailPublicFolder -Identity "\pf1" $User = Get-User -Anr "User1" $AccessRights = @( "ReadItems", "CreateItems", "EditOwnedItems", "EditAllItems", "FolderVisible" ) Add-PublicFolderClientPermission -Identity "\$($PF.Id)" -User $User.UserPrincipalName -AccessRights $AccessRights -Verbose VERBOSE: Returning precomputed version info: 3.9.2 VERBOSE: Requested HTTP/1.1 POST with 227-byte payload VERBOSE: Received HTTP/1.1 response of content type application/json of unknown size VERBOSE: Query 1 failed. Add-PublicFolderClientPermission: Object reference not set to an instance of an object. Thank you
How to repair a corrupted Public Folder (on-prem)
Hello guys, Hope all is well. In our Exchange 2019 environment we use Public Folders extensively. Everything seems ok except one of folders that looks corrupted. I can execute commands Get-PublicFolder / Set-PublicFolder against it, I can get its items statistics (Get-PublicFolderItemStatistics) and have access to items through Outlook. But commands Get-PublicFolderStatistics, Get-PublicFolderClientPermission return the same error: The security principal specified is already on the permission set. + CategoryInfo : NotSpecified: (:) [Get-PublicFolderStatistics], CorruptDataException + FullyQualifiedErrorId : [Server=E7,RequestId=b2f89187-878f-4cab-b05f-fcdaa7d82c0d,TimeStamp=2/17/2025 3:19:42 PM] [FailureCategory=Cmdlet-CorruptDataException] B960021F,Microsoft.Exchange.Manag ement.MapiTasks.GetPublicFolderStatistics I tried to repair the corresponding public folder mailbox (New-MailboxRepairRequest) but none of my requests found errors. I moved the public folder content to a different public folder mailbox, no success. Any ideas how to fix the issue? My guess is that ACL list of the public folder is corrupted. Regards, Dmitry Horushin
Public Folder Migration Failed
We have a problem migrating public folders from an Exchange 2019 OnPremise to an Exchange Online. We followed the Microsoft guide: https://learn.microsoft.com/en-us/exchange/collaboration/public-folders/migrate-to-exchange-online?view=exchserver-2019 We get to step 7. When completing the PublicFolderMigration job, the status changes to “Completing” and then to “Failed”. The error message in the EXO Shell is: Status: Failed Message: Error calling “net.tcp://be1p281mb2001.deup281.prod.outlook.com:9821/Microsoft.Exchange.MailboxReplicationService BE1P281MB2001.DEUP281.PROD.OUTLOOK.COM (15.20.8207.17 ServerCaps:FFFFFFFF, ProxyCaps:1FFFFFFFFFFFFFFFC7DD2DFDBF5FFFFFCB07EFFF, MailboxCaps:, legacyCaps:FFFFFFFF)”. Error details: The communication object System.ServiceModel.Channels.ServiceChannel cannot be used for communication because it is in a Faulted state. --> The communication object System.ServiceModel.Channels.ServiceChannel cannot be used for communication because it is in a Faulted state. Does anyone have an idea what this error means? We have already removed and restarted the entire migration, but the same error occurs again.
Unable to export all public folder permissions to .CSV
Hello, I've been trying to export a list of every single public folder user's permission to a csv file. Its successful when I use : get-publicfolder -recurse | get-publicfolderclientpermissions | export-csv XXX , however it does only return about 10000 entries. If I add resultsize -unlimited to the above script it returns nothing - the csv file is completely blank. Any ideas? I also need to get a list of permissions to all public folders for a single user ( we've about 1000 of them in our env and user would like to know to which folders he has an access to). In addition it does return the below error now:
