Remove OWA Autocomplete Entries with PowerShell ( Rooms )

[Cédric Perion]

Hi,

After a migration From Google to Office 365, many mailboxes have fake rooms entries.

I want to clear the Rooms cache.

I see the fake rooms in OWA and Outlook too.

There is any suggestions, how can i clear that ?

Thanks

[#2]

"Pure" PowerShell will not help you here. You can do it with some EWS based script or manually via Outlook or low-level tools. Details for example here: http://blog.enowsoftware.com/solutions-engine/bid/184025/Clearing-AutoComplete-and-other-Recipient-C...

[#3]

Can you share also some details about your migration scenario: number of mailboxes migrated and what tools did you sue for the migration? I'm currently working at the first stages of a Google Apps to Office 365 migration and I want to be prepared for this kind of situations :)

[#4]

Also know that outlook and OWA uses two different files to store autocomplete.

If you want to clear OWA cache, you need to do it 1 address at a time, by the delete key