How To Fix Kaspersky Error 1603?

The error code 1603 occurs during the Kaspersky Antivirus installation or update process. It is a run-time error that is commonly faced by many Kaspersky users. To fix the Kaspersky error 1603, follow the below-mentioned troubleshooting methods.

Kaspersky error 1603

Solution: 1

  • On your Windows, click the Start menu at the bottom-left corner of the screen.
  • Type “device manager” in the search panel and hit the Enter key.
  • From the search result, give a double-click on the Device Manager tab.
  • In the Device Manager window, give a right-click on the hardware icon and choose Properties from the pop-up menu.
  • Click the Driver tab and select the Update Driver option.
  • Once you have updated the driver, restart your Windows and check if the Kaspersky error 1603 reappears.

Solution: 2

  • Click the Start menu and type “cmd” in the search panel.
  • Give a right-click on the Command Prompt app from the search result.
  • From the pop-up menu, select the Run as administrator option.
  • In the Command Prompt window, type the “DISM.exe /Online /Cleanup-image /Restorehealth” command and press Enter.
  • Wait until the DISM tool runs the scan.
  • After completing the scan, check for the corrupted or infected files on your Windows.
  • Type the “sfc /scannow” command and hit the Enter key.
  • Wait until the scan is complete.
  • It will automatically repair the corrupted files. This will help you to resolve Kaspersky error 1603.

Solution: 3

  • On your Windows, go to the Windows Control Panel and click the Uninstall a Program tab.
  • Select the Kaspersky Antivirus software and its related files from the programs list.
  • After selecting the Kaspersky products, click the Uninstall/Change button.
  • Click the OK button to confirm your action.
  • Next, open the Run panel by pressing the Windows + R shortcut keys.
  • Enter “Regedit” in the Run dialog box and click the OK button.
  • In the Registry Editor window, navigate to the “HKEY_LOCAL_MACHINE /MACHINE /SOFTWARE /Microsoft /Windows /CurrentVersion /Uninstall” file path.
  • Choose the Kaspersky Antivirus software and give a right-click on the UninstallString icon.
  • Copy the highlighted text and close the Registry Editor window.
  • Click the Start menu and paste the copied text in the search panel.
  • If prompted, click the OK button to confirm your action towards uninstalling the Kaspersky product.
  • Now, download the Kaspersky Antivirus software from the official Kaspersky site and reinstall it on your Windows.
  • Make sure that you have downloaded a compatible antivirus to avoid installation errors in the future.
  • Now, you will not get the Kaspersky error 1603 on your Windows.
  • If it reappears, contact our technical support team for remote assistance.


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