Files with zln file extension might be found as PCD files renamed by ZoneAlarm's Mailsafe service.

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Software that open zln file

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ZLN file extension - ZoneAlarm Mailsafe renamed PCD data

What is zln file? How to open zln files?

File type specification:

Various data file type icon Various data file type

zln file icon: zln filetype icon

The zln file extension is associated with ZoneAlarm, a personal firewall software, originally created by Zone Labs and currently developed by CheckPoint Software Technologies LTD.

One of ZoneAlarm features is MailSafe, which detects e-mail attachments and warns the user about their presence. When a potentially dangerous attachment is detected, the program quarantines the file with simple renaming of its original file extension, so it breaks the common program association function in Windows and prevents such files from being executed (or launched via associated program).

A file with zln file extension originally had PCD file extension (most likely Microsoft Visual Test file). Simple renaming will restore the Windows associations with such file, however it is not advised, unless you are absolutely sure it safe to do.

Updated: September 21, 2018

The default software associated to open zln file:

ZoneAlarm Pro icon

Check Point Software Technologies Ltd. logoZoneAlarm Pro  Microsoft Windows software

Company or developer:
Check Point Software Technologies Ltd.

ZoneAlarm Pro is a set of tools used to protect computer against hacker attacks,destroy spyware, and secure privacy.

Related articles:

Mailsafe renamed file extensions

Help how to open:

You can rename the ZLN file extension back to PCD and work with the file normally. This can however be potentially dangerous, because the file was quarantined for a reason. So always re-check it with your anti-virus or anti-spyware programs before you rename the files.

How to convert:

Probably cannot be converted to anything else.

List of recommended software applications associated to the .zln file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open zln file, edit zln file, convert zln file, view zln file, play zln file etc. (if exist software for corresponding action in File-Extensions.org's database).

Unspecified and all other actions for computer programs working with zln file - ZoneAlarm Mailsafe renamed PCD data

Click on the software link for more information about ZoneAlarm Pro. ZoneAlarm Pro uses zln file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).

Microsoft Windows:

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ZLM file extension

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