If you see a "success" message, restart and try the installation again.
To resolve the klim6sys x64 upd driver installation error, try the following steps: kaspersky error installing driver klim6sys x64 upd
Corrupted system files can block driver registration. Open Command Prompt as Administrator. Run DISM /Online /Cleanup-Image /RestoreHealth . Run sfc /scannow after the first command finishes. If you see a "success" message, restart and
If the installer fails at driver loading, you can attempt to manually pre-install the driver: If you see a "success" message
: Windows has a limit on the number of network filter drivers; if you have multiple VPNs or security tools, it may fail.