Warning msg every 2 minutes (same)

Hi,
I get and warning about blocked a threat and no further action is required …but this msg repeating every 2 minutes …How can I stop ? (attached)
Jorge

https://forum.avast.com/index.php?topic=53253.0

since it is comming from dropbox, you may try this first

How do I clear my cache? https://www.dropbox.com/help/328

Thanks a lot ! Solved ! ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D

if you want a check, see the guide Eddy gave you…

scroll down to Farbar Recovery Scan Tool, run as instructed and attach the two diagnostic logs