Exchange powershell request too large

Try batching by OU
get-mailbox -organizationalunit domain/users |  Add-MailboxPermission -User ”User” -AccessRights ‘FullAccess’

you can also modify the send receive sizes, but that will only work on remote sessions see:
https://www.experts-exchange.com/questions/28424605/Remote-client-exceeded-allowed-maximum.html

I tried the command in an OU with 7 users and it works but wont work with 27. Could there be something else stopping this apart from what can be solved with the remote sessions?

$sales = Get-Mailbox
$sales | ForEach-Object{
  Add-MailboxPermission -identity $_ -User ”user” -AccessRights ‘FullAccess’
}

does that help?


**edited

Its requesting an identity?

Hello,

Please use below command :

Get-Mailbox | Add-MailboxPermission -User <UserorGroupIdentity> -AccessRights Fullaccess -InheritanceType all

Let me know if this works for you.

Thanks,
Andy