Thursday 31 May 2012

Exchange cached mode and ost files

Turning cached mode on is intended for laptop users so they have access to read emails when offline. Usually we turn off cached mode when we have constant connectivity to the exchange server like on a desktop on the LAN.

Often users will find OST files taking up GB's worth of space for no good reason.
Disable cached mode in outlook, close outlook and delete the ost file.

Also OST files cannot be migrated you need to delete them and let outlook create a new one. If you are running a migration from office2007 to 2010 make sure to exclude ost files.

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