hi, a few weeks ago i starting migrate exchange 2010 to 2013,   migrate 50% of users  and everything worked fine,  but yesterday noticed that client in their outlook calendar,cannot add meeting to room mailbox calendar, erros says that they not have permission

when i chac folder permission from administrator user it says

i today migrate all users, room mailbox and system mailboxes from old exchange to new exchange but no eny change,  

what can i do ?

Hi,

Please check this in OWA.

Meanwhile, check the permission on the room mailbox.

Get-MailboxPermission Room | fl AccessRights,User

And does this issue occur on all room mailbox?

Best Regards.

i, check and my user have full Access permission,   

this error occurs every room malbox,  i create new room mailbox and same error thare

Hi Lasha,

Have you checked the mailbox folder permission on the room for calendar folder? Check if the user is having enough permission to book meetings.

Get-MailboxFolderPermission -Identity room@domain.com:\calendar

Thanks & Regards

Vickram M

Hello 

During migration there are few things that should be working across. One of them is Free busy. Are you able to access free busy from Exch2010 users to exch 2013 users and vice versa. if yes check the permissions with below command.

Get-MailboxFolderPermission -RoomMailbox@domain.com:\calendar 

here is result of that command

Hi,

Provide permission for this user and check if he can book the meetings from his calendar.

Add-MailboxFolderPermission -Identity "calendar@domain.com:\calendar" -User "user" -AccessRights Owner

Regards

Vickram M

Hi,

Provide permission for this user and check if he can book the meetings from his calendar.

Add-MailboxFolderPermission -Identity "calendar@domain.com:\calendar" -User "user" -AccessRights Owner

Regards

Vickram M

• Marked as answer by Lasha Tsuladze 17 hours 28 minutes ago

thank  you   i wanted to give all user to owner permission so  i gave Default and Anonymouse "users" owner permission and everything is working now