Outlook Cache Mode Terminalserver disable through Registry

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Rainersc

Member
Outlook version
Outlook 2010 32 bit
Email Account
Exchange Server
Hallo,we applied in Default Domain Policy that Outlook Cache Mode is automaticly used for all Clients.But this leads to the problem, that the cache files on a Terminalserver fills the Systemdrive.So we wrote a local script (which is only executed on Terminalserver User login) that the cache mode is disabled through Registry [HKCU\Software\Policies\Microsoft\Office\Office Version Number\Outlook\cached mode DWORD: Enable 0It works for new Users which are logging on to the Terminalserver.It works also for existing Users/Profiles (the Registry Key is correct set to 0 -> and in the Outlook Profile the Cache Mode Option is not checked,but even if we delete the .ost file every time the User opens Outlook (2010) the cache fil will be build again and is filling.Resolution would be to delete the whole User Profile (on the Terminalserver) and create a new one.But thats not practical for us (because there are about 100 existing Profiles).RegardsRainer
 

Diane Poremsky

Senior Member
Outlook version
Outlook 2016 32 bit
Email Account
Office 365 Exchange
When you disable cache mode, the ost is not removed /disabled.

I'd compare the registry of a new profile with the registry for an old profile and see if you can identify which keys need to be removed to remove the ost. And verify it works too - if so, you can avoid creating new profiles.

If you need to make new profiles, use the OCT to create a PRF. All the users will lose is a few options that are profile specific.
 
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