Restart your computer normally and try the installation again. 2. Manually Remove the klim6 Driver
Look for greyed-out, duplicate, or old VPN/virtual miniport adapters.
: Applications like VMware , Cisco AnyConnect , or WinPcap use similar network filtering technology and can cause conflicts. Reinstalling these apps can sometimes reset the necessary libraries.
Windows has a default limit on how many network filters can be installed. If you use VPNs, virtualization software (like VMware), or other security tools, you might have hit this ceiling. Press Win + R , type , and hit Enter. error 27300 error installing driver klim6sysx64 exclusive
Error 27300 (specifically involving the driver klim6.sys_x64_70_exclusive
Before diving into advanced solutions, it is wise to perform some quick checks that may provide a shortcut to a solution.
to the network stack or is blocking the NDIS filter installation. Core Causes Residual Files Restart your computer normally and try the installation
"System," Elias spoke into the voice command interface. "Why is the Klimatis unit active?"
Choose your exact previously installed Kaspersky software from the drop-down menu (if nothing shows, select the closest match or run it twice for multiple legacy versions). Enter the security captcha and click .
Repeat this process for all listed network adapters, including virtual ones. Step 4: Reset the Windows Network Stack : Applications like VMware , Cisco AnyConnect ,
Temporarily uninstall programs like VMware , Cisco AnyConnect , or other VPN/virtualization software that might be using the same NDIS filter layer.
When the list of options appears, press or F7 on your keyboard to select Disable driver signature enforcement . Once Windows boots, try to install Kaspersky again. Method 4: Clear the catroot2 Folder
Corruption in the Windows Cryptographic Services or the catroot2 catalog database, which prevents Windows from verifying the digital signature of the driver.
Use Sysinternals or Process Explorer :
Download the fresh installer from the official Kaspersky website and try installing again. Method 2: Manually Remove the klim6 Driver (CMD)