Opening a QTN File

The QTN file type is primarily associated with Norman Virus Control.

QTN	File extension: QTN
	File type:	Quarantine File

What is a QTN file?

QTN files mostly belong to Norman Virus Control by Norman. An infected file is encrypted and given the .QTN extension. It is then stored in the \NVC\QARANTIN directory under the main Norman Virus Control directory.

How can I open a QTN file?

You need a suitable software like Norman Virus Control to open a QTN file. You need a suitable software like Norman Virus Control from Norman to open a QTN file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your QTN file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a QTN file directly in the browser:. Just drag the file onto this browser window and drop it.

Online QTN Text Viewer

Choose your .qtn file to analyze

or drag and drop it here

Online File Viewer

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.QTN File Won't Open? Here is What You Can Do

QTN files can come from different programs and aren't universally openable.

Identify the Source: These are often quarantined malware files created by IT administrators, security workflows, or antivirus software.
Check the Header: Inspect the first bytes in a hex viewer or text editor.
- Scrambled data usually indicates an encrypted quarantine file.
- "PK" suggests a ZIP archive containing the isolated threat.
- Readable XML/JSON might reveal metadata about the infection.
Use the Original Software: The original program is usually required. Likely tools include Norman Virus Control or Norman Endpoint Protection; if uncertain, ask the sender.
Use this Webpage: Drag and drop the file into our viewer to detect the format, extract readable text/metadata, and preview when possible.

Technical Data for QTN File Extension

Related files:

zip, pdf, bckp

a qtn Quarantine File is a special file format by Norman and should only be edited and saved with the appropriate software.

How to solve problems with QTN files

Associate the QTN file extension with the correct application.
Update your software that should actually open quarantine files. Because only the current version supports the latest QTN file format. Search, therefore, e.g. on the Norman manufacturer website after an available Norman Virus Control update.
To make sure that your QTN file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .QTN file online - secure, fast, and no downloads needed.