Login/Account exists but no Mailbox present (4381292)

User account exists in Archive Manager but has no Mailbox attached (and it's not available in Mailboxes). 

The account might be deleted. 

Check and verify the account in SQL database.

1. Open SQL database.
2. Expand ArchiveManager database
3. Look for table name 'dbo.login'
4. Right click on the table and choose 'select top 1000 row'
5. Run this query. Replace "accountname" with the name of the user : 

   select * FROM [ArchiveManager].[dbo].[MailBox] where Name like '%accountname%'

6. Once you have the output, take note of the attribute "OwnerLoginID"
7. Next, look for table name 'dbo.mailbox' and right click and choose 'select top 1000 row'
8. Run this query. 

   select * FROM [ArchiveManager].[dbo].[MailBox] where OwnerLoginID = valueoftheOwnerLOginID

9. In the output, verify the value of attribute "Deleted". If the value is 1, it show the account deleted. 
10. If the value is 1, the user need to check with the Database Admin to update the value to 0. 
11. Once update, the user Mailbox should be now available in Archive Manager.