I downloaded avast free antivirus online version. The installation progress normally upto the window which says "installation in progress. Do not turn off your PC". There is a blue bar which fills up normally. But after the bar fills up the window disappears with no future action. There is no error message or confirmation of successful install.
Latest Windows 10 Update Causing Freezes, Sluggish Performance
Issues with Avast v in Windows | Born's Tech and Windows World
If certain program components and features are not working properly in Avast Antivirus , we recommend you repair your installation using the Avast Setup wizard. The repair process resets your software configuration by fixing or replacing program files which may be out of date, corrupted, or missing. When you repair Avast Antivirus, some customized settings may be preserved, however, other settings may return to their default configurations. Repairing Avast Antivirus If certain program components and features are not working properly in Avast Antivirus , we recommend you repair your installation using the Avast Setup wizard. Log into Windows as a user with administrator permissions and ensure no other application or antivirus software is running on your PC. Right-click the Windows Start button and select Apps and Features from the menu that appears.
Install the latest Avast update to fix Windows 7 boot up issues
Avast released an emergency update to fix the bugs that came with the recent Windows 7 and 8. The update fixed the annoying unresponsive Windows startup and booting issues. Microsoft confirmed users utilizing Sophos and Avast security solutions experienced some serious issues after installing the latest Windows 7 and Windows 8. These updates forced systems to become unresponsive and freeze on boot. However, Avast was quick to respond to these issues by releasing an update to fix them.