Issue
The Archive Shuttle Shortcut Process Module may log the following error while removing shortcuts in Office 365 mailbox:

2016-01-21 15:00:51Z|9044| 54|TRACE| CallService|[user.name@domain.com]: Executing action with credentials [impersonation@onmicrosoft.com].
2016-01-21 15:00:52Z|9044| 53|TRACE| CallService|[user.name@domain.com]: Executing action with credentials [impersonation1@onmicrosoft.com].
2016-01-21 15:00:53Z|9044| 42|TRACE| CallService|[user.name@domain.com]: Executing action with credentials [impersonation2@onmicrosoft.com].
2016-01-21 15:00:53Z|9044| 35|TRACE| CallService|[user.name@domain.com]: Executing action with credentials [impersonation3@onmicrosoft.com].
2016-01-21 15:00:54Z|9044| 26|TRACE| CallService|[user.name@domain.com]: Executing action with credentials [impersonation4@onmicrosoft.com].
2016-01-21 15:00:55Z|9044| 39|TRACE| CallService|[user.name@domain.com]: Executing action with credentials [impersonation5@onmicrosoft.com].
2016-01-21 15:00:56Z|9044| 35|TRACE| CallService|[user.name@domain.com]: Executing action with credentials [impersonation6@.nmicrosoft.com].
2016-01-21 15:00:56Z|9044| 53|TRACE| CallService|[user.name@domain.com]: Executing action with credentials [impersonation7@onmicrosoft.com].
2016-01-21 15:00:57Z|9044| 65|TRACE| CallService|[user.name@domain.com]: Executing action with credentials [impersonation8@onmicrosoft.com].
2016-01-21 15:00:58Z|9044| 28|TRACE| CallService|[user.name@domain.com]: Executing action with credentials [impersonation9@onmicrosoft.com].
2016-01-21 15:01:00Z|5820|156|ERROR| SearchCollectionResult|[user.name@domain.com]: Search error Void CallService(System.Action`3
[Microsoft.Exchange.WebServices.Data.ExchangeService,QUADROtech.ExchangeWebServices.Interfaces.ICallServiceInfo,System.Object], System.String, System.Object)
 Too many concurrent connections opened., Microsoft.Exchange.Data.Storage.TooManyObjectsOpenedException:
 Cannot open mailbox /o=ExchangeLabs/ou=Exchange Administrative Group/cn=Recipients/cn=User. --->
 Microsoft.Mapi.MapiExceptionSessionLimit: MapiExceptionSessionLimit: Unable to open message store. (hr=0x80040112, ec=1246)

Solution
When the Shortcut Process Module is using Office 365 configuration, it could use all the accounts stored in credentials editor to execute the commands, and at some point, it will return the “Too many concurrent connections opened” error.
This issue is under investigation. For more details, please contact support.
The temporary workaround is to install the Office 365 and Shortcut Process Modules on other machine/server, add a small number of accounts with Application Impersonation permissions to the credentials editor, and map the new Shortcut Process Module to the Office 365 link you are using.

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