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How do I fix Unarc.dll error code 7?

Alton Alexander
By Alton AlexanderUpdated on June 4th, 2022

The unarc.dll error code 7 is a Windows registry error. This error code can be caused by a corrupt registry, or by a corrupt unarc.dll file. This error code can also be caused by a malware infection.

1. Update your video drivers

  1. Open Device Manager by right clicking on My Computer and selecting Device Manager.
  2. In Device Manager, find the video card and select it.
  3. In the Properties window, find the Driver tab and click on the Update Driver button.
  4. In the Update Driver dialog box, browse to the location of the driver file and click on the Search button.
  5. When the driver file is found, click on the Next button.
  6. In the Driver Details dialog box, make sure that the Check for updates box is checked and click on the Update button.
  7. If the driver is not found, click on the Install button and follow the on-screen instructions.

2. Install the latest version of DirectX

  1. Download the latest DirectX from Microsoft website.
  2. Extract the files to a location on your computer.
  3. Install the DirectX component.
  4. If prompted, enter the administrator password to allow the installation to proceed.
  5. Launch the DirectX installation program.
  6. Follow the on-screen instructions to install the DirectX component.
  7. Once the installation is complete, launch the DirectX Control Panel.
  8. In the DirectX Control Panel, under the "Programs" tab, select "DirectX."
  9. Under "DirectX Version," select the latest version available.
  10. Click "OK."
  11. Close the DirectX Control Panel.
  12. If prompted, restart your computer.
  13. Launch the game that you want to fix the unarc dll error code 7.
  14. If the game crashes, try reinstalling the game.
  15. If the game still crashes, try repairing the game using the DirectX installation program.
  16. If the game still crashes, try reinstalling DirectX.

3. Reinstall the game or program

  1. Double click the installer.
  2. Choose the language you want to install the game in.
  3. Click on the next button.
  4. Choose the disk where the game is stored.
  5. Click on the next button.
  6. Choose the installation folder.
  7. Click on the next button.
  8. Click on the next button.
  9. Click on the next button.
  10. Click on the next button.
  11. Click on the next button.
  12. Click on the next button.
  13. Click on the next button.
  14. Click on the next button.
  15. Click on the next button.
  16. Click on the next button.
  17. Click on the install button.
  18. Click on the next button.
  19. Click on the finish button.

4. Run a virus scan

  1. In your computer's browser, open the Windows Start Menu and locate the Microsoft Windows Update utility.
  2. Click the "Check for updates" button.
  3. If updates are available, the Windows Update utility will display a list of available updates.
  4. Click the "Install updates" button.
  5. The Windows Update utility will search for and install any available updates.
  6. When the updates are installed, the Windows Update utility will close.
  7. Restart your computer.
  8. If the unarc dll error code 7 still occurs, repeat the steps to Run a virus scan.

5. Check your system for errors

  1. Check your system for errors.
  2. If errors are found, fix them.
  3. Re-run the unarc dll error code 7 check.

6. Clean your registry

To clean your registry, first close all open programs and windows on your computer. Next, click on the Windows logo in the bottom left corner of your computer screen. Next, click on the Start menu and then on the Control Panel. Click on the Uninstall a Program link in the left column of the Control Panel window. In the list of programs that appears, click on the ArcSoft Unarc dll program. Click on the Uninstall button. Click on the Start button and then on the Control Panel. Click on the System and Security link. Click on the Windows Settings link. Click on the Security Options link. Click on the System Protection link. Click on the Cleanup System Files button. Click on the OK button. Click on the Yes button to confirm that you want to clean your registry. Click on the Close button. Click on the OK button to close the Control Panel. Reboot your computer. If the unarc dll error code 7 still occurs, repeat the steps to clean your registry.

If you didn't find success with an option above, then try:

  1. Try using a different video card