With Microsoft Office 365, more specific Outlook in a multiuser environment is problematic, if pure Microsoft Remote Desktop Services or with Citrix XenApp/XenDesktop. The Exchange servers are in the Cloud, and therefore the Outlook Cache mode is required. With activating the cache mode together with roaming profiles, the OST file is stored under
AppData\Local\Microsoft\Outlook and can grow up to 100GB.
This results in the following issues:
- Profiles grow and therefore the login time increases.
- The OST file needs to be collected from
- Redirecting the OST file to a network share isn't really supported by Microsoft.
- Redirection in general works but reading the file through SMB can be an issue.
Next to the cache mode there is also the SearchIndex for Outlook and comes with the same issues. What are the solutions offered by Microsoft and Citrix for multiuser environments? Since the release of Citrix User Profile Manager (UPM) version 7.18, Outlook cache mode and SearchIndex can be used.