Cracked activation codes (including any “270” variant you may find on forums) carry serious risks:
: Modern versions of Windows and macOS have built-in support for winzip activation code 270
If you are looking for specific, recent, or safe ways to upgrade, WinZip Registration & Activation Code | How to find them or safe ways to upgrade
Run the error 270 fixes above; if the problem continues, request a new code from Corel. if the problem continues