LanguageZL4
ZoneAlarm Mailsafe renamed CHM data
File type: Various data file
A zl4 file extension is related to the ZoneAlarm MailSafe, a personal firewall program. A zl4 file contains renamed CHM data.
What is zl4 file?
File type category:
Various data file
Date updated: May 7, 2018
The zl4 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 zl4 file extension originally had CHM file extension (Microsoft help 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 zl4 file?
You can rename the ZL4 file extension back to CHM 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 zl4 file?
Probably cannot be converted to other formats.
Suggested software to open zl4 file:
Associated software actions with the zl4 file
Software apps that create zl4 files:
ZoneAlarm Pro (Microsoft Windows)
Software applications that handle other tasks involving zl4 files:
ZoneAlarm Pro (Microsoft Windows)