Windows 10: General question - Malware or virus threat

Hello,
On turning-on my computer, first thing is updating antivirus (AVG), scan computer, and if I download anything, first is to scan it with the antivirus.
Recently I attached an external usb disk (new, clean and empty) and to free some disk space moved many files to the external disk, most of the files are program installation files which are installed on the computer.
Then I ran a scan on the external disk, and the scan found some threat and cleaned it.
My question is (just for knowledge), how is it possible same file on the computer scanned clean and on the external disk found some threat ?
Answers will be appreciated.
Thanks





:)

 

windows malicious software removal tool

The windows malicious software removal tool will scan and detect malware but at the end of the scan no results are shown, no threats detected..clearly there is malware..uninstalled...reinstalled windows malicious software tool..ran this tool a couple weeks
ago detected malware showed the results..worked fine! HELP!

***Post moved by the moderator to the appropriate forum category (from
Virus and Malware | Windows Defender | Scanning, Detecting, and Removing threats Windows 10 to Virus and Malware | Other | Scanning, Detecting, and Removing threats Windows 10).***

 

Windows Defender is calling some of my Trainers "Backdoor MSIL/Bladebindilrfn" ! They are NOT Threats to my system!

Ever since I installed Win 10, Many of my Trainers for my games either immediately stop or generate False threats as some type of Malware. Even if I put them on exclusion lists, Folders and files, they are falsely identified as malware!

Windows 10 is Killing my gaming experience!

The only recommendation from the Trainer site is to turn off all virus and anti Malware programs.

This is absolutely unacceptable!

 

Hi Motim.

From my experience not all AV scanners scan every single file on a computer unless you so direct. Especially if you use two or more drives.

You can imagine how long a full, every file every where, scan would take on each boot. As such the different vendors scan the high risk areas. Some products even allow you to set which files can be ignored.

I would open AVG and see where it normally scans. You also likely have a "Custom" scan. Open it and you likely can likely set it for everywhere, every file.

Ken