Access denied for .dat files

[windo]

Hi,
For a few days, I have been getting an error when syncing my phone with my pc :

T:\MyPhoneExplorer\samsung SM-A528B [358809075006595]\Phonebook.dat cannot be created !
Access denied.

Same behaviour for Organizer.dat, Calls.dat. What happens ?
I dont understand, my T: disk is available, and I would not like to have data loss.
Please can you help me ?

Thx a lot !

[icke1954]

It all indicates that MPE has no access to T: .
Try it by starting MPE with administrator rights.