Opening ZLK Files

The ZLK file type is primarily associated with ZoneAlarm Mailsafe.

ZLK	File extension: ZLK
	File type:	Renamed .MSI File

What is a ZLK file?

ZLK files mostly belong to ZoneAlarm Mailsafe by Zone Labs. Use our "Online ZLK Text Viewer" below to analyze your ZLK file and to see all text it contains.

How to open ZLK files

You need a suitable software like ZoneAlarm Mailsafe to open a ZLK file. You need a suitable software like ZoneAlarm Mailsafe from Zone Labs to open a ZLK 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 ZLK file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a ZLK file directly in the browser:. Just drag the file onto this browser window and drop it.

Online ZLK Text Viewer

Choose your .zlk file to analyze

or drag and drop it here

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What to Do When a .ZLK File Fails to Open

Because .ZLK files can originate from different programs, they are not universally openable.

Identify the Source: If received via email, it is often a quarantined attachment from Zone Labs' ZoneAlarm Mailsafe. Alternatively, it may be a proprietary workflow file.
Check the Header: Open the file in a hex viewer to inspect the first few bytes:
- D0 CF 11 E0 indicates a renamed MSI installer.
- "PK" suggests a zipped archive.
Use the Original Software: The original program is usually required; try renaming it to .MSI to run with Windows Installer, use ZoneAlarm, or ask the sender if uncertain.
Use this Webpage: Drag and drop your file onto this page to detect its format, extract readable text or metadata, and preview contents when possible.

Technical Data for ZLK File Extension

Program ID:

ZAMailSafe

Related files:

zpa, zmp, zmd

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: ZAMailSafe
EXEFile: %ProgramFiles%\CA\eTrust EZ Armor\eTrust EZ Firewall\_INS5576._MP -warning %1

ProgramID: ZAMailSafe
EXEFile: %ProgramFiles%\CA\eTrust EZ Armor\eTrust EZ Firewall\ca.exe

ProgramID: ZAMailSafe
EXEFile: %ProgramFiles%\CA\eTrust EZ Armor\eTrust EZ Firewall\ca.exe -warning %1

ProgramID: ZAMailSafe
EXEFile: %ProgramFiles%\Zone Labs\ZoneAlarm\iclient.exe -warning %1

ProgramID: ZAMailSafe
EXEFile: %ProgramFiles%\Zone Labs\ZoneAlarm\zaplus.exe -warning %1

ProgramID: ZAMailSafe
EXEFile: %ProgramFiles%\Zone Labs\ZoneAlarm\zapro.exe -warning %1

ProgramID: ZAMailSafe
EXEFile: %ProgramFiles%\Zone Labs\ZoneAlarm\zlclient.exe

ProgramID: ZAMailSafe
EXEFile: %ProgramFiles%\Zone Labs\ZoneAlarm\zlclient.exe -warning %1

ProgramID: ZAMailSafe
EXEFile: %ProgramFiles%\Zone Labs\ZoneAlarm\ZONEAL~1.EXE -warning %1

ProgramID: ZAMailSafe
EXEFile: %ProgramFiles%\ZONELA~1\ZONEAL~1\ZONEAL~1.EXE -warning %1

ProgramID: ZAMailSafe
EXEFile: Y:\ZoneLabs\ZoneAlarm\zlclient.exe -warning %1

ProgramID: ZAMailSafe
EXEFile: %ProgramFiles%\ZoneAlarm\zlclient.exe -warning %1

ProgramID: ZAMailSafe
EXEFile: %ProgramFiles%\CA\eTrust EZ Armor\eTrust EZ Firewall\zonealarm.exe -warning

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a zlk Renamed .MSI File is a special file format by Zone Labs and should only be edited and saved with the appropriate software.

How to solve problems with ZLK files

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