How can I resolve it? I have this issue when my users want to create teams meetings from outlook

Question

PS C:\Windows\system32> Get-MailboxFolderStatistics -Identity <User> -FolderScope Calendar WARNING: An unexpected error has occurred and a Watson dump is being generated: Invalid named property: [{00020329-0000-0000-c000-000000000046}:'MailboxGuid'] GuidName_MailboxGuid. Get-MailboxFolderStatistics : Invalid named property: [{00020329-0000-0000-c000-000000000046}:'MailboxGuid'] GuidName_MailboxGuid. At line:1 char:1 + Get-MailboxFolderStatistics -Identity <User> -FolderScope Calend ... + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~    + CategoryInfo          : NotSpecified: (:) [Get-MailboxFolderStatistics], StoragePermanentException    + FullyQualifiedErrorId : Microsoft.Exchange.Data.Storage.StoragePermanentException,Microsoft.Exchange.Management.Tasks.GetMailboxFolderStatistics

 

 

 

 

In outlook I get this error

 

Remote Server returned '554 5.2.0 STOREDRV.Deliver.Exception:StoragePermanentException; Failed to process message due to a permanent exception with message Invalid named property: [{00020329-0000-0000-c000-000000000046}:'SchedulingServiceMeetingOptionsUrl'] . StoragePermanentException: Invalid named property: [{00020329-0000-0000-c000-000000000046}:'SchedulingServiceMeetingOptionsUrl'] . [Stage: OnCreatedEvent][Agent: Meeting Message Processing Agent]'

Answer 1

Hi @Elmar Babayev ,

Welcome to the Microsoft Q&A platform!

Based on your description, you are experiencing some issues related to invalid named properties in PowerShell and Outlook.

About the error you see in Get-MailboxFolderStatistics usually occurs when there is a problem with the named properties in the mailbox. Here are some possible solutions:

1. Sometimes, corrupted items in the mailbox can cause this error. You can use the New-MailboxRepairRequest cmdlet to repair the mailbox:

New-MailboxRepairRequest -Mailbox <User> -CorruptionType ProvisionedFolder,SearchFolder,AggregateCounts,Folderview

2. If you are using Exchange Online, try using the Get-EXOMailboxFolderStatistics cmdlet instead:

Get-EXOMailboxFolderStatistics -Identity <User> -FolderScope Calendar

3. Moving the mailbox to another database can sometimes resolve issues with named properties:

New-MoveRequest -Identity <User>

About the Outlook error indicates a problem with the named properties related to the Scheduling Service Meeting Options. This can happen if the mailbox has too many properties in the PublicString namespace, exhausting the quota for that namespace.

1. If you are using Digital Guardian, suspend its use as it may create redundant attributes.
2. Moving the mailbox to another database and then recreating the Outlook OST file can help alleviate this issue. You can request a mailbox move through the Microsoft 365 Admin portal1.
3. Running the following command can help clean up the free/busy data, which may resolve the issue:

outlook.exe /cleanfreebusy

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Please feel free to contact me for any updates. And if this helps, don't forget to mark it as an answer.

Best,

Jake Zhang