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David C
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Exchange powershell request too large

Hi Experts

I am trying to run the command below but getting an error that the request is too large

get-mailbox  | Add-MailboxPermission -User ”User” -AccessRights ‘FullAccess’

Error message

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Andy Andy

8/22/2022 - Mon

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:
David C

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?

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David C

Its requesting an identity?

New message

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Andy Andy


Please use below command :

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

Let me know if this works for you.