Can .dat files be deleted?

.dat files are often system files!! Have you run an antivirus? If so, which one? If it's Norton, these files should have been quarantined and you can send them to Symantec for information!! They will give you a response. In any case, if these files are in quarantine, it means they are isolated from the system, so after 1 or 2 weeks without any impact on the PC, you can delete them from the quarantine folder after trying recovery!

It'll come.