Hi Saad. I'm Greg, an installation specialist, 9 year Windows MVP and Independent Advisor, here to help you.
No expert in Forums where we see the most cases (by the thousands) recommends Avast, AVG. Norton or McAfee, but we have solved many problems over the years by having them uninstalled.
I would uninstall any 3rd party antivirus and try running only built-in Defender which gives adequate protection, least issues, and is from Microsoft who knows how to protect their OS best.
If you want the best on-demand scanner install and run a full scan with Malwarebytes free scanner: https://www.malwarebytes.com/mwb-download/ You can turn off the free trial at any time in the app's Settings > Accounts.
Afterwards check if any System files are broken by running System File Checker from https://www.lifewire.com/how-to-use-sfc-scannow.... If it won't repair them within three separate attempts, run a Repair Install which reinstalls WIndows while keeping your files, programs and most settings in place, by installing the Media Creation Tool, open the tool and choose Upgrade This PC Now. This will solve most problems and also bring it up to the latest version which you need anyway and by the most stable method. http://windows.microsoft.com/en-us/windows-10/m...
I hope this helps. Feel free to ask back any questions and let us know how it goes. I will keep working with you until it's resolved.
Standard Disclaimer: There are links to non-Microsoft websites. The pages appear to be providing accurate, safe information. Watch out for ads on the sites that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the sites before you decide to download and install it.
Windows MVP 2010-20
Over 100,000 helped in forums in 10 years I do not quit for those who are polite and cooperative. I will walk you through any steps and will not let you fail.
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