| File Extension: | QTN |
| File Type Description: | Norman Virus Control |
| File Type Developer: | Norman |
| Primary Associated Software: | AVG Internet Security |
| Primary Software Developer: | AVG Technologies |
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Primarily, a QTN file extension is a type of Norman Virus Control file developed for the AVG Internet Security software program by AVG Technologies. User statistics infer that these QTN files are popular with users from United States and most frequently found on the Windows 10 platform. A vast majority of these users are opting to use Google Chrome as their preferred internet browser.
 | AVG Internet Security by AVG Technologies |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
 | Mac |
 | Android |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .S7P | Symantec Corporation | Uncommon Files | SubSeven Malware |
| .ARU | Symantec Corporation | Uncommon Files | Autorun.aru Malicious Data |
| .SNU | AVG Technologies | Uncommon Files | AVG Anti-Virus Data File |
| .LET | Genesis 2000, Inc | Data Files | Genesis 2000 Data |
| .TLS | AVG Technologies | Uncommon Files | TuneUp Utilities Logon Screen |
| .AVG | AVG Technologies | Data Files | AVG Antivirus Virus Database |
| .RHK | Symantec Corporation | Data Files | Backdoor.Win32.Rbot.rhk Data |
| .TTT | Interscape | Data Files | TestTrack Pro Database File |
| .BAV | Ritlabs, SRL | Plugin Files | AVG Bat! Plugin File |
| .LNS | AVG Technologies | Data Files | AVG Anti-Virus Language Data File |
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