Exchange 2013 Mailbox permissions.

Exchange 2013 Mailbox permissions.

I have given user1 as mailbox owner for user2 mailbox.
I opened Outlook on user1 PC and added user2 mailbox to user1 outlook.
However when user1 tries to expand user2 mailbox, it gives error "cannot expand the folder"
How can I fix that ?

there is also user3 mailbox that I added to user1 mailbox with no issue, and there is also no issue to expand user3 mailbox from user1 Outlook. However I need user1 to send email as user3 instead of "on behalf of user3", how can I accomplish that.

Thank you
jskfanAsked:
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VB ITSSpecialist ConsultantCommented:
How exactly did you grant user1 owner access to user2's mailbox? i.e. Did you assign the permissions through the Exchange Admin Center (EAC) web console or through the Exchange Management Shell installed on the Exchange server?

Try running this command in the Exchange Management Shell to grant user1 full access to user2's mailbox:
Add-MailboxPermission -Identity "user2" -User user1 -AccessRights FullAccess -InheritanceType all

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If user1 tried to access user2's mailbox before they were given the access then they may need to wait for Exchange to update its internal cache. One sure way to grant immediate access is to restart the Microsoft Exchange Information Store service although not too many people do this just to grant somebody access to another person's mailbox as it's overkill. The alternative option is to simply be patient. After a few hours user1 should be able to access user'2s mailbox.
there is also user3 mailbox that I added to user1 mailbox with no issue, and there is also no issue to expand user3 mailbox from user1 Outlook. However I need user1 to send email as user3 instead of "on behalf of user3", how can I accomplish that.
You can do this by granting user1 Send As access to user3's mailbox. To do this through the Shell, use this command:
Add-ADPermission -Identity "user3" -User "user1" -ExtendedRights "Send As"

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If you would prefer to do it through the EAC console then follow these steps:
- In EAC, click Recipients on the left then Mailboxes
- Locate user3 in the list of mailboxes then click on Edit
- Click on Mailbox Delegation on the left
- Click Add under Send As
- Locate user1 in the list then click OK
- Click Save when done

For more information on managing mailbox permissions, please see this article: https://technet.microsoft.com/en-AU/library/jj919240%28v=exchg.150%29.aspx
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jskfanAuthor Commented:
user1 is owner of user2 mailbox, in user1 Outlook I added user2 mailbox, but when user1 clicks on user2 mailbox(shows as folder in Outlook), then user1 gets a message saying "Cannot expand folder"
I deleted user1 outlook profile and recreated it, but still the issue is on....how can I get that fixed ?
I have read online, and most of the solutions proposed where about changing registries...To me it is not a solution because the registry keys they talk about , might not exist when I look for them.....
I cannot resolve the issue "Cannot expand folder"
Any help will be very much appreciated
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VB ITSSpecialist ConsultantCommented:
You should never have to modify the registry to get access to another mailbox hosted on an Exchange server.

With that being said, can you please give more information on user1's setup? i.e. What version of Outlook and Windows are they running?

Have you tried logging in as user1 on another machine and then try accessing user2's mailbox from there?

Also verify that user1 can log into OWA and can open user2's mailbox  through there.
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jskfanAuthor Commented:
I gave "folder visible" permissions on user2 Outlook to user1..
it fixed it..
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jskfanAuthor Commented:
Thank you
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