Error 27300 Error Installing Driver Klim6sysx64 Exclusive ((free))
Error 27300
Context: Driver Installation Failure
Affected Driver: klim6sysx64.sys
Issue Type: Exclusive Access / Permissions Conflict
Step-by-Step Solutions to Fix Error 27300
Follow these methods in order. Start with Method 1, as it solves 80% of cases.
Method 1: Run the Official Kaspersky Removal Tool
Because the error relates to a Kaspersky driver, the vendor provides a specialized tool to clean up locked files and registry keys. error 27300 error installing driver klim6sysx64 exclusive
Step 1: Download the kavremover tool from the official Kaspersky support site.
Step 2: Restart your computer into Safe Mode (Press F4 after reboot, or use msconfig → Boot → Safe boot).
Step 3: Run kavremover.exe as Administrator.
Step 4: Type the security code shown on screen.
Step 5: Select the Kaspersky product you were trying to install (or select "All detected products").
Step 6: Click "Remove." The tool will forcibly delete all Kaspersky drivers, including klim6sysx64.
Step 7: Reboot normally and attempt the installation again.
Investigative Report: Error 27300 – Exclusive Access Violation for klim6sysx64
Method 3: Manually Delete the Stale klim6.sys Driver
If the driver file is corrupted or marked as "in use," force its removal. Step-by-Step Solutions to Fix Error 27300 Follow these
Step 1: Open Command Prompt as Administrator.
Step 2: Stop the service if it exists:
sc stop klim6 sc delete klim6
Step 3: Navigate to the drivers folder:
cd C:\Windows\System32\drivers
Step 4: Take ownership of the file:
takeown /f klim6.sys icacls klim6.sys /grant administrators:F
Step 5: Delete the file:
del klim6.sys
(If it says "access denied," proceed to Method 4.)
Step 6: Reboot and retry installation.
✅ Step 2 – Scan for malware
Upload the .sys file or the installer to: VirusTotal
Hybrid Analysis
If multiple engines detect it as malicious, delete it.
