Scenario:
User A comes to me to advise they cannot expand a certain Distribution List.
Checking this on outlook we also encountered the same error:
![Exchange 2010: cannot expand distribution list Exchange 2010: cannot expand distribution list](https://www.collaborationpro.com/wp-content/uploads/2015/07/DLError-300x38.png)
There are some areas to check:
Hidden from the GAL
Group Scope
- Check that the Distribution List is not hidden. You can check in AD or Exchange:
![Exchange 2010: cannot expand distribution list Exchange 2010: cannot expand distribution list](https://www.collaborationpro.com/wp-content/uploads/2015/07/DLError1-300x259.png)
![Exchange 2010: cannot expand distribution list Exchange 2010: cannot expand distribution list](https://www.collaborationpro.com/wp-content/uploads/2015/07/DLError2-258x300.png)
Okay great, so the hidden field is not set.
Now in AD lets go and check the Group Scope:
![Exchange 2010: cannot expand distribution list Exchange 2010: cannot expand distribution list](https://www.collaborationpro.com/wp-content/uploads/2015/07/DLError3-259x300.png)
From what we can see here it is set to Universal. Lets change the Group Scope to Global.
Now from the outlook client we are able to expand the group.
![Exchange 2010: cannot expand distribution list Exchange 2010: cannot expand distribution list](https://www.collaborationpro.com/wp-content/uploads/2015/07/DLError4-300x194.png)
Hope it helps.