Unable to Clear ALERTS pop-up on EAC in Exchange 2016

Question

_{Friday, August 25, 2017 3:41 PM}

Hello,
After completed export mailbox to PST. I used this command to Clear ALERTS on EAC (Exchange 2016) but failure.
Command: 

Get-MailboxExportRequest -Status Completed | Remove-MailboxExportRequest

Get-MailboxExportRequest -Status Completed | Remove-MailboxExportRequest -Force

I got warning as following,

[PS] C:\Windows\system32>Get-MailboxExportRequest -Status Completed | Remove-MailboxExportRequest
WARNING: An unexpected error has occurred and a Watson dump is being generated: Value cannot be null.
Parameter name: index
Value cannot be null.
Parameter name: index
    + CategoryInfo          : NotSpecified: (:) [Remove-MailboxExportRequest], ArgumentNullException
    + FullyQualifiedErrorId : System.ArgumentNullException,Microsoft.Exchange.Management.Migration.MailboxReplication.
   MailboxExportRequest.RemoveMailboxExportRequest
    + PSComputerName        : MBX.mydomain.com

Could you please guide me? Tks.

All replies (3)

_{Monday, August 28, 2017 8:41 AM ✅Answered | 1 vote}

Hi,

Based on your description, I know that you get an error message “Parameter name: index, Value cannot be null.” when run “Get-MailboxExportRequest -Status Completed | Remove-MailboxExportRequest” to remove completed export request. Your command is correct but you received an unexpected error.

During to my testing, I reproduce it in my Exchange 2016 CU6 lab, and this commend works fine in Exchange 2016 CU4 and CU5.

As a workaround, we could run this command instead:
Get-MailboxExportRequest -Status Completed | %{Remove-MailboxExportRequest $_.RequestGuid -Confirm:$false}

Which Exchange version are you used, Exchange 2016 CU6 or earlier?
I will double confirm this issue and update here if I get news. Sorry for any inconvenience.

Best Regards,

Manu Meng
TechNet Community Support

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_{Friday, August 25, 2017 1:31 AM}

Hello,
I used this command to DELETE ALERTS on EAC (Exchange 2016) but failure.
Command: "Get-MailboxExportRequest -Status Completed | Remove-MailboxExportRequest"

Then returned the error is

[PS] C:\Windows\system32>Get-MailboxExportRequest -Status Completed | Remove-MailboxExportRequest
WARNING: An unexpected error has occurred and a Watson dump is being generated: Value cannot be null.
Parameter name: index
Value cannot be null.
Parameter name: index
    + CategoryInfo          : NotSpecified: (:) [Remove-MailboxExportRequest], ArgumentNullException
    + FullyQualifiedErrorId : System.ArgumentNullException,Microsoft.Exchange.Management.Migration.MailboxReplication.
   MailboxExportRequest.RemoveMailboxExportRequest
    + PSComputerName        : MBX.mydomain.com

P/S: This command was returned the result of export completed "Get-MailboxExportRequest -Status Completed"

Anyone can help me please !

Thank you !

_{Thursday, October 5, 2017 9:13 AM}

Hi Manu Meng,

I'm sorry for my feedback late.

I'm using Ex2016 CU6.

The alert was automatically disappeared in few days later since i posted the topic. I don't know why ?

Thanks for your support.