The issue is not on your computer, but on the management server, with it's certificate. Maarten suggested to change date on the management server.
Also, I suspect that changing date on the management server and leaving it like that might affect in some other not pleasant issues later.
The parameter "Management Tool User Certificate Validity Period" in the ICA Tool represents the amount of time that a user certificate is valid when initiated using the Management Tool.
If the value of this parameter is set to "7300" days (20 years), the CA will not able to add the "not valid after" field of the ToBeSigned certificate created from a template.
Starting on January 2018, the "not valid after" field will exceed the maximum Unix epoch time (January 19, 2038). Due to this, Check Point is setting the certificate expiration date to be equal to the maximum Unix epoch time.
You can try contacting Check Point Support. This software version is not supported, but maybe they can provide you with a hotfix or tell which actions can you take to temporary fix it.