antivirus blocks dropbox

[CROcus]

for a couple of days the dropbox synchronization is blocked, after several attempts with the assistance, I reinstalled the dropbox software several times, I found that by deactivating the antivirus, Dropbox returns to work.

So, I wanted to try to exclude dropbox from "threats and exclusions" but I can't, pressing OK closes the program and asks me to send the error to support.

I went to: settings - threats and exclusions - Specify trusted applications - I chose the dropbox.exe

...selected some fields and given the ok, the program closes

[Schulte]

Hello @CROcus, Welcome.

The program should not crash, of course. There seems to be something wrong.
You can try the solution by@Igor Kurzin :

Note that depending on the product used, the path may be different. The workaround refers to version 21.3.10.391.

[CROcus]

solved: after several attempts, I reinstalled karspersky and now it works fine. thank you