Exchange - Script to add Calender permssions to everyone from Everyone

HI all

I need to give reviewer permissions to all users. everyone on the Office365 tenet will need reviewer access to everyone calenders
I came up with this crude script, it aint fancy it works half way though but the Add-MailboxFolderPermission gives an error

Any ideas?

$usersmail=Get-Mailbox -ResultSize unlimited -Filter {(RecipientTypeDetails -eq 'UserMailbox') -and (Alias -ne 'Admin')}

$UPNList=Get-Mailbox -ResultSize unlimited -Filter {(RecipientTypeDetails -eq 'UserMailbox') -and (Alias -ne 'Admin')}  | select UserPrincipalName

$usersmailformatted01= $usersmail -replace '@{Identity='
$usersmailformatted02= $usersmailformatted01 -replace '}'

$UPNListFormatted01= $UPNList -replace '@{UserPrincipalName='
$UPNListFormatted02= $UPNListFormatted01 -replace '}'

Not sure from here onwards

foreach ($usera in $usersmailformatted02){foreach ($userb in $UPNListFormatted02){Add-MailboxFolderPermission -Identity "$user:\Calendar" -User $userb -AccessRights Reviewer}}
Rat ZuluAsked:
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Will SzymkowskiSenior Solution ArchitectCommented:
Not sure what you are trying to do exactly in your script but you can accomplish this by using the following script below...

$Mailboxes = Get-Mailbox -ResultSize "unlimited"
ForEach ($Account in $Mailboxes) {
Set-MailboxFolderPermission -Identity ($Account.Alias:\Calendar) -User Default -AccessRights Reviewer
}

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Will.
0

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Minecraft_ EndermanCommented:
To make all Domain Users able see all appointments between each other. We just need to set the “default” user as Reviewer permission.

Script like this:
$users = Get-mailbox –Resultsize Unlimited
$users | ForEach-Object {Set-MailboxFolderPermission $_":\Calendar" -User Default -AccessRights Reviewer

Open in new window

0
Will SzymkowskiSenior Solution ArchitectCommented:
Not sure why you would basically repeat what I said in my first post.

Will.
0
Minecraft_ EndermanCommented:
Sorry, I didn't see your script carefully......
0
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