| 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 |
|---|---|---|---|
| .BIN | Unknown Developer | Disk Image Files | Binary Disk Image File |
| .CTF | Interscape | Data Files | WhereIsIt Catalog File |
| .NLS | Uri Wilensky | Developer Files | NetLogo Source Code File |
| .SSY | Unknown Developer | Compressed Files | ScreenShare Compressed Data |
| .SCI | Open Source | Data Files | Scilab Script |
| .XXX | BloodDolly | Encrypted Files | TeslaCrypt 3.0 Ransomware Encrypted File |
| .OZD | Symantec Corporation | Data Files | Win32.TrojanDownloader.Agent.OZD Trojan |
| .XTBL | Unknown Developer | Encrypted Files | XTBL Ransomware Encrypted File |
| .IVA | Unknown Developer | Video Files | Surveillance Video File |
| .RHK | Symantec Corporation | Data Files | Backdoor.Win32.Rbot.rhk Data |
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