My Mac Pro cant see (Find) my NAS drive.

no one can help you if you are still running Kaspersky, or any other third-party virus scanners. They are so intrusive and completely useless. You can't tell what is really going on. Your wounds are considered self-inflicted until that stuff is GONE.

Recent versions of MacOS completely changed how you should think about malware. 

From MacOS 11 Catalina onward, the system is on a Separate, crypto-locked System Volume, which is not writeable using ordinary means. Any unauthorized differences that appear to the crypto-locked volume are quickly detected and you are alerted.

So you could store just about every malware known to mankind on your Mac, and your Mac would not get infected spontaneously. Scanning for virus-like patterns might make you feel a little better now, but it is outdated nonsense.

Nothing can become Executable Unless/Until you supply your Admin password to "make it so".

ClamXAV and MalwareBytes are the suggested third-party anti-virus to be running if you MUST have one installed to meet corporate requirements. They can be set for a VERY light touch. MalwareBytes is well respected by Mac Users.

Kaspersky has been accused of using its anti-Virus to break into secure connections on your Mac, and so ineptly as to leave you MORE exposed to attack than without their package installed. Kaspersky has been PROHIBITED on government systems, and if your employer has government contract, may put those contracts in jeopardy.

Make Sure that on your network connections, you have set IPv6 to 'Link-local only' to allow MacOS Discovery protocol to find resources on your network.