The driver klim6.sys (Kaspersky Lab Intermediate Minifilter Driver) is a kernel-mode file system filter driver. It loads early during boot or during installation and intercepts all file I/O operations for real-time protection.
Standard uninstallation often leaves behind driver remnants that block new versions. Download the official kavremover tool from the Kaspersky Support site, run it as an Administrator , and restart your computer to clear these traces.
The best path forward is to follow the structured troubleshooting guide in this article. Start with the simplest steps—like ensuring Windows is up-to-date and checking for conflicting software—and only proceed to the more complex solutions if necessary. For most users, running the tool will be the silver bullet that cleans the slate and allows for a successful installation.
: Traces of expired or improperly uninstalled antivirus programs (like McAfee, Sophos, or Malwarebytes) still bind to network adapters. kaspersky error installing driver klim6sys x64 upd
When the "Error 27300" interrupts your Kaspersky installation, it's usually because the driver—the engine behind the Kaspersky NDIS 6 Filter
This stops the service, renames the problematic folder, and then restarts the service, allowing Windows to create a fresh, uncorrupted database. After running these commands, restart your PC and try the Kaspersky installation again.
This is one of the most common causes.
If a corrupted iteration of the network filter remains registered in the Windows service database, it must be forcefully cleared.
If the remover tool doesn't fix the issue, you may need to manually delete the problematic driver service.
Test Mode lowers security. Only do this for the duration of the installation. The driver klim6
Fixing the "Kaspersky Error Installing Driver klim6.sys x64"
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