I have an Outlook 2010 user (whose mailbox size is over 50GB) on Exchange 2010. He uses Outlook 2010 in "cached mode".
Today there was an error about OST size. I checked the size of OST file and it was very close to 50GB.
I understand that maximum size of OST or PST on Outlook 2010 is 50GB.
For now I disabled "Cached mode" in Outlook 2010. But I prefer to run Outlook in Cache mode just in case Exchange Server is not available, at least the user would have access to all previous emails & folders.
So what is the best solution here?
(1) Simply disable Cache mode or
(2) Change registry value "somehow" to allow OST file size bigger than 50GB if that is possible?