Frequently Asked Question

This topic describes how to reinstall the Driver for KAYA's products manually. To do so, You must take the following operations.
Note: Windows should be configured to allow unsigned drivers first if the new driver is unsigned.

Using Vision Point 2020.1 and above, you may refer to the "Step 1 and step 2" alternative and easier uninstalling option listed below.


Step 1: Uninstalling KAYA driver:

1. Open Device Manager
2. Open "KAYA Instruments devices" and/or "KAYA Instruments" menus
3. Right-click on the device and choose Uninstall device
   Note: A couple of drivers related to KAYA may appear
4. In the opened dialog window, check "Delete the driver software for this device" and click Uninstall
5. Perform steps 3-4 for all KAYA's listed devices
6. Please refer to the images below for reference
7. Check that the kayaXXX.sys driver was removed from C:\Windows\System32\drivers directory

Step 2: Removing old drivers from the repository:

To ensure the driver won't be restored automatically from Driver Store, please follow these steps:

1. Please download the Rapr.exe utility from here
2. Execute the Rapr.exe utility as administrator (doesn't require installation)
3. Locate "KAYA Instruments" and/or "KAYA Instruments devices" in the drivers list
   Note: If no KAYA drivers were found, this indicates that the previous step (uninstalling the driver via Device Manager) deleted the driver, and you can skip this step.
4. Check ALL drivers check-boxes appeared under those categories
   Note: A couple of drivers related to KAYA might appear
5. Under Operations, check "Force Deletion" and press Delete Package
6. Please refer to the image below for reference
7. Check that the kayadrvr drivers were removed from
   C:\Windows\System32\DriverStore\FileRepository directory
   

Step 1 and step 2 alternative option:

1. Open "Control panel".
2. Under "Programs" choose "Uninstall a program"

3. Find "Windows Driver Package - KAYA Instruments Ltd. PCI Driver...." in displayed list.

4. Right-click on the package and choose "Uninstall/Change"

5. choose 'Yes' in the "Uninstall Driver Package" window

6. Restart the PC

Step 3: Installing the new driver:

1. Make sure the driver directory ({KAYA Instruments root folder}\Common\bin\driver\x64\MS_Signed) includes the following files:
   • kayakern.cat
   • KAYAKERN.inf
   • KAYAKERN.sys
2. There are three ways to install the new driver

1. Via dpinst.exe utility.
   Run dpinst utility choose next and after driver installation was completed click finish
2. Via bat file.
   Run KAYAKERN_install.bat from the command line or manually
3. Via Device Manager.
   Choose the Action menu and click on Scan for hardware changes. Locate the device - please note the device may appear in Device Manager as an unrecognized PCI device with a yellow triangle icon next to the title. Right-click on the device and choose "Update driver". Choose the path to the new driver and click OK.

Please note that after driver installation you need to restart the PC