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
Repeat this process for all listed network adapters, including virtual ones. Step 4: Reset the Windows Network Stack
Step 1: Perform a Clean Uninstall of Previous Security Software error 27300 error installing driver klim6sysx64 exclusive
: Most technical experts recommend using the official Kavremover tool. Boot your computer into Safe Mode . Run kavremover.exe as an Administrator .
The term exclusive in the log indicates that the installer’s MoveFile or CreateFile call failed with: When the list of options appears, press or
Open Windows Security (search for it in the Start menu). Step 2: Click on Virus & threat protection . Step 3: Under "Virus & threat protection settings," click Manage settings . Step 4: Turn off Tamper Protection . Step 5: Also turn off Real-time protection temporarily. Step 6: Try the installation again. Important: Re-enable Tamper Protection after the driver installs successfully.
Temporarily uninstall programs like VMware , Cisco AnyConnect , or other VPN/virtualization software that might be using the same NDIS filter layer. Step 4: Reset the Windows Network Stack Step
: 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.
Run the following commands one by one, pressing Enter after each: net stop cryptsvc
: Applications that use NDIS filters, such as VMware Workstation, Cisco AnyConnect, or WinPcap, can interfere with the driver installation.