Hello @EkaterinaKupchikhina54505,
discussed this internal. So yes, the cache expires, but the connector should not change anything in the policy. The policy is stored locally on the endpoint and is changed only, if there is a new version received from AMP PC/Cloud.
There is no TTL for the policy in the product.
If you see this issue on several computers, it may makes sense to check your connector with TAC.
Greetings,
Thorsten