ZLN

ZoneAlarm Mailsafe renamed PCD data
File type: Various data file
Files with zln file extension might be found as PCD files renamed by ZoneAlarm's Mailsafe service.
What is zln file?
File type category:
Various data file
Date updated: September 21, 2018
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.
How to open zln file?
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 zln file?
Probably cannot be converted to anything else.
Suggested software to open zln file:
Associated software actions with the zln file
Software applications that handle other tasks involving zln files:
ZoneAlarm Pro (Microsoft Windows)