.AZF file extension
To open .AZF files on Windows, install or obtain AirZip FileSECURE Reader from the organization or vendor source that provided the .AZF file.
To open a .AZF file, use AirZip FileSECURE Reader or the FileSECURE software environment that issued the file. Standard archive tools and built-in OS previewers usually cannot open it because .AZF is a proprietary encrypted FileSECURE format.
Last updated: April 29, 2026 · Reviewed by Julian Stricker
Open on your device
Choose your operating system for a dedicated step-by-step opening guide.
How to open .AZF files
Use these platform-specific instructions to open .AZF files safely.
Windows
- Install or obtain AirZip FileSECURE Reader from the organization or vendor source that provided the .AZF file.
- Right-click the .AZF file, choose Open with, and select FileSECURE Reader.
- If prompted, sign in or enter the password/credentials supplied by the sender.
- If it still will not open, ask the sender to confirm that your account has permission to view the file.
Mac
- macOS does not have native support for .AZF files, and common archive utilities are not expected to open them.
- Check with the sender or your organization for a FileSECURE Reader option supported in your environment.
- If no compatible Mac option is available, transfer the file to a supported desktop setup provided by the sender or organization.
Linux
- Linux desktop environments do not normally include support for AirZip FileSECURE .AZF files.
- Do not try to extract the file with tar, unzip, or generic archive tools; the format is proprietary and encrypted.
- Ask the sender or administrator for access to FileSECURE Reader on a supported system.
iOS
- iOS Files and Quick Look are not expected to preview .AZF files natively.
- Contact the sender or your organization for an approved FileSECURE viewing method, or open the file on a supported desktop environment.
Android
- Android file managers and document viewers are not expected to open .AZF files natively.
- Use only an organization-approved FileSECURE viewing method if one is provided, or transfer the file to a supported desktop environment.
Security notes
- Treat .AZF files as protected documents: they may contain sensitive print-quality output controlled by encryption and digital rights management.
- Only enter FileSECURE credentials or passwords in a trusted FileSECURE Reader obtained through the sender, your organization, or the vendor source.
- Do not assume an .AZF file is safe or intended for redistribution just because you can open it; its permissions may restrict viewing, printing, copying, or sharing.
- Keep the FileSECURE Reader or approved viewing environment updated, because proprietary document viewers can still have file-parsing security issues.
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Can't open this file?
These are the most common causes and fixes when .AZF files fail to open.
Common reasons
- The file opens in the wrong program
- Access is denied or credentials are requested
- The file is incomplete or corrupted
- No viewer is available on your device
Fix steps
- Close the archive utility or generic viewer.
- Use Open with and choose AirZip FileSECURE Reader instead.
- If FileSECURE Reader is not installed, ask the sender or administrator for the correct installer or access method.
OS-specific troubleshooting
What is a .AZF file?
An .AZF file is an AirZip FileSECURE secure format file registered with the MIME type application/vnd.airzip.filesecure.azf. AirZip documentation describes FileSECURE as combining encryption, compression, secure viewing, and enterprise digital rights management. AZF files can contain secured printable output that is rendered by FileSECURE Reader without requiring the original application that created the document.
Background
The .AZF extension is most commonly associated with AirZip FileSECURE. It is used for protected documents or print-quality output that has been secured for viewing under FileSECURE controls rather than distributed as a normal editable document or ordinary compressed archive.
Unlike common archive formats such as .zip or .7z, an AZF file is not meant to be extracted with a general-purpose archive manager. The file may be encrypted and access-controlled, so opening it can require the FileSECURE Reader and the correct rights, password, account, or license policy assigned by the sender or organization.
AirZip documentation also mentions .AZS alongside .AZF. In practical terms, if you receive an .AZF file from a company, school, or other organization, the best source for the correct viewer and access instructions is usually that organization or the sender.
Common MIME types: application/vnd.airzip.filesecure.azf
Further reading
Authoritative resources for more details on the .AZF format.
Common .AZF issues
The file opens in the wrong program
Because the name resembles an archive extension, the system may offer ZIP or archive utilities, but .AZF is a proprietary AirZip FileSECURE format.
- Close the archive utility or generic viewer.
- Use Open with and choose AirZip FileSECURE Reader instead.
- If FileSECURE Reader is not installed, ask the sender or administrator for the correct installer or access method.
Access is denied or credentials are requested
AZF files may be encrypted and rights-managed, so simply having the file may not be enough to view it.
- Use the account, password, or access instructions supplied by the sender.
- Confirm that your name, device, or organization account is authorized to view the file.
- Ask the sender to reissue the file or update the permissions if your access has expired or was not granted.
The file is incomplete or corrupted
A damaged download or email attachment can prevent FileSECURE Reader from rendering the secured content.
- Compare the file size with the sender's original if possible.
- Download the file again or request a fresh copy.
- Avoid opening the file from inside a compressed email attachment until it has been fully saved to local storage.
No viewer is available on your device
AZF support depends on AirZip FileSECURE Reader or an approved FileSECURE environment, and there may be no native support on mobile or non-Windows-like systems.
- Ask the organization that sent the file which platforms it supports.
- Use a supported desktop environment if provided.
- If you only need the contents, ask the sender whether they can provide an allowed alternative format such as PDF.
FAQ
Is an .AZF file a ZIP archive?
No. Although it is sometimes described as an archive or secure container, the registered .AZF type is an AirZip FileSECURE proprietary encrypted format. Standard ZIP tools are not expected to extract it.
What program opens .AZF files?
AirZip FileSECURE Reader is the software named in the official registration and AirZip documentation for opening and displaying AZF-secured files.
Can I convert an .AZF file to PDF?
Not by renaming it. Any export, print, or conversion depends on the permissions set in FileSECURE and the features allowed by the sender or organization.
Why can the sender open the .AZF file but I cannot?
The file may be encrypted for specific users, devices, or rights policies. Ask the sender or administrator to confirm that you have permission and that you are using the correct FileSECURE Reader.
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