File Extension Library


.ZO1 File Extension

  • Developer by: Check Point Software Technologies Ltd.
  • Category: Various data Files

What are .ZO1 files and how to open them?

Can't open .ZO1 file? Are you wondering what it contains? On our site we will explain to you what this file is, what it is used for and what software opens the .ZO1 file.

What is a .ZO1 file extension?

.ZO1 file extension is created by Check Point Software Technologies Ltd.. .ZO1 has been classified as Various data Files.

.ZO1 is ZoneAlarm Mailsafe renamed data

The zo1 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 zo1 file extension had its original file extension renamed for security reasons.


How to open:

You cannot access these files manually.

How to convert:

Probably cannot be converted to anything else.

How to fix problems with .ZO1 files

  1. You need to update the application that you normally use to open .ZO1 files. Only the latest version of the software supports the current .ZO1 file format
  2. You need to check the .ZO1 file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)