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You must have even attempted to restart your computer and try to launch Avast several times, but you still receive the same screen upon restart: ‘UI failed to load, AV Service is not responding.’ Then you receive the ‘Exit’ and ‘Restart-Service’ buttons on the error dialog box. Following this update, many users have faced an issue that the Avast UI failed to load. What to do if Avast UI failed to loadĪvast recently released an update of its free Antivirus and VPN software. Avast Antivirus is available for download on Microsoft Windows, masOS, Android and iOS devices. If this box is checked, potential threats opened in Sandbox cannot modify your computer or files.Avast Antivirus is a free antivirus and VPN service developed by Avast. Enable Hardware-Assisted Virtualization-This is a more secure way to launch virtualized processes.Limit Program Access for Guest Account-A user logged in to your computer as a Guest cannot access or modify settings for Avast Business Antivirus.Check this box to delay loading Avast Business Antivirus services until after other system services load, but this slightly increases risk because your system is unprotected for a short period during startup. Load Avast Services only after Loading Other System Services-Avast Business Antivirus service normally loads early in the boot process, but in some cases, this can slow down the system temporarily after startup.Clearing this box turns off the self-defense and allows Avast Business Antivirus files to be deleted.

Activate Avast Self-Defense Module-Avast Business Antivirus contains self-defense features to prevent virus attacks from modifying or deleting critical antivirus files.When this box is checked, Avast Business Antivirus takes action for all files containing threats, including those with a valid digital signature. This is cleared by default to exclude trusted files from being deleted or moved if a threat is detected. When this box is cleared, Avast Business Antivirus reports but does not take any action for files that contain a threat but have a valid digital signature. Skip Checking of Digital Signatures of Infected Files-This refers to when a threat is detected in files containing a valid digital signature, including system files.