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(Windows) Change User Account Control Settings

Notice

This document is a machine-translated draft and is currently undergoing review. Some content may be inaccurate or differ from the original Korean version. For the most precise information, refer to the Korean documentation.

Symptoms​

  • The player installation popup appears repeatedly, or a security warning saying "Do you want to allow this app to access the internet?" keeps appearing.
  • During player installation, a message saying "File access denied" appears and the installation is interrupted.
  • During player installation, a message saying "The publisher could not be verified" appears and the installation does not proceed.

Cause​

This occurs when the User Account Control (UAC) security level in Windows is set very high. When this security setting is excessively high, it can block normal access and execution of the Kollus Player and agent programs required for video playback.

Resolution​

You can resolve the issue by logging in with a Windows administrator account and changing or adjusting the User Account Control settings to the default value.

  1. Type 'User Account Control' in the Start menu search bar, then click [Change User Account Control settings] from the search results.
  2. When the User Account Control settings window appears, move the blue slider bar on the left to adjust the settings.
    • Recommended setting: If popups keep appearing, try lowering the setting one step at a time and attempt video playback. In general, setting it to the second level from the top, [Notify me only when apps try to make changes to my computer (default)], will resolve the issue.
  3. After changing the setting, click [OK] at the bottom.
  4. [Restart] the system to apply the changes, then try playing the video.
Caution

Changing the security setting to the lowest level, [Never notify (disabled)], may allow the player to function normally, but it will lower the overall security level of your PC, increasing the risk of exposure to malicious software. It is recommended to thoroughly consider your PC's security environment before making any changes.