John wrote:

I am getting a cyclic redundancy error on my pst file. The errors
seems to come towards the end when copying the file. The file open in
Outlook but does not show reminders. What are my choices of
recovering as much as possible from this file?

For future is there a way to maintain a copy of this file while one
carries on working in outlook?

A CRC errror tends to indicate a hardware issue. Run CHKDSK a couple of
times. Then, create a new PST, make it your delivery location (if you're
currently using the old PST as the delivery location), and copy the contents
of the old PST to the new one.
--
Brian Tillman [MVP-Outlook]