Thank you for the reply Tony, the list is extensive and cuts out before it reaches the end. I assume I would have to export it. I was wondering if there was some easier way but I guess not so much. I tried: Remove-MailboxFolderPermission -Identity Account@example.com:\Calendar -User *.* but it tells me the operation can’t be performed because *.* matches multiple entries, which is exactly what I want it to do.

Get all the entries using Get-MailboxFolderPermission -identity “user:\calendar” and put them into an array. Then loop through the array and call Remove-MailboxFolderPermission for each user?

I have a calendar who’s ACL is full due to too many users being in it. I would like to delete all the users who have access to that calendar regardless of access level. I will then replace the users with groups. Is there a simple way to wipe all users from a calendar?

I am looking for a way to avoid users from changing the default and anonymous folder permissions from none to owner by themselves, is there a policy we can set in place to avoid users from making this on OWA so then it replicates to the outlook client, is not to remove the Default and Anonymous but to disable users ability to do this via desktop client or webmail

Stop smoking so much giggly bush and you wont be so paranoid

I also had that requirement – a large shared mailbox with thousands of subfolders, many of which had SIDs of previous staff in the permissions. I modified the script by removing the $user parameter from the inputs. Within the foreach loop, I added a nested loop:

$users = Get-MailboxFolderPermission -Identity $identity
Write-Host -ForegroundColor Red “Checking $identity”
foreach ($user in $users)
{
if ($user.User -match “NT User:S-1”)
{
… mostly the same as the existing script
}

I had to change $user to $user.user elsewhere in the existing script as the $user object was a different type, I guess. Hope that helps someone.

I know this is old, but thanks a ton to both of you! This makes cleaning up dead user accounts so much easier!

Sorry, I only know english and don’t know how to translate the script for other languages.