Remove shared calendar permissions

i have followed post added permissions view calendars of other users in office 365 environment.  need clear out these permissions 60-70 email addresses.  how start this?

hi fedres,

thanks for your posting.

to remove permissions to view calendars, please use cmdlet remove-mailboxfolderpermission.

and script below may helpful remove permissions:

$allusers = get-mailbox | select identity foreach ( $user in $allusers ) { get-mailbox | foreach {  if ( $_.identity -ne $user.identity ) { remove-mailboxfolderpermission $($_.samaccountname)+":\calendar" -user $user.identity        }    } }

hope helps.

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