Error 27300 Error | Installing Driver Klim6sysx64 Exclusive [new]

Error 27300 is a critical installation failure that occurs when a Kaspersky application cannot install a specific driver—typically klim6.sys_x64

System Integrity Issues:

Corruption in the Windows Cryptographic Services or the catroot2 catalog database, which prevents Windows from verifying the digital signature of the driver. error 27300 error installing driver klim6sysx64 exclusive

4.2 Identify locking process

• Press Windows key + R, type msconfig, and press Enter.
• Go to the Services tab, check Hide all Microsoft services, and then click Disable all.
• Go to the Startup tab (or Startup Impact in newer Windows versions), and disable all startup items.
• Restart your computer and try to install the driver.