HOW TO: Deal with BadItemLimits

Overview

During the Move mailbox step, you may receive a Failure type of "BadItemLimitExceededPermanentException", which will leave the move request in failed status.

Cause

The BaditemLimit configuration has been exceeded.

Solution

When dealing with BadItemlimits there are two options:

A:  Increase the BadItemLimit and resume mailbox migration:

1. Connect to Exchange Online via powershell

Connect-ExchangeOnline

2. Check the badItemlimit value from the move request statistics

Get-MoveRequestStatistics -Identity "user@contoso.com | Format-list"

3. Increase the bad item limit above the current value that is shown in the previous step

“Set-MoveRequest -Identity "user@contoso.com" -BadItemLimit 100”

4. Resume move request

“Resume-MoveRequest -Identity "user@contoso.com"

B: If there is a widespread issue across Exchange, repairing the Exchange Database can be considered although not guaranteed to fix the bad messages.