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Firstly, connect to Exchange Online Powershell, like described here: https://docs.microsoft.com/en-us/powershell/exchange/exchange-online/connect-to-exchange-online-powershell/connect-to-exchange-online-powershell?view=exchange-ps Then copy-paste this to a powershell.ps1 file, like calrights.ps1: Foreach ($mbx in get-mailbox){ $calendar=$mbx.alias+”:\Calendar” Add-mailboxfolderpermission -identity $calendar -user call -AccessRights Reviewer } USERNAME is the user you will give the rights spcified, here is is the user “call” PERMISSION is the permission level (role) you want to give that user. The options are: […]

When migrating mailboxes to Office 365, you may get this error is the migration window: “Request ‎’‎’ has already encountered more than ‎’5‎’ large items and can‎’t be given a limit of ‎’0‎’.” This is due to the default mailboxplan, it only allows for mailitems, that are max. 35MB. This can be changed through Exchange Online Powershell. To migrate items […]