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ERFW file extension

The table below provides useful information about the .erfw file extension. It answers questions such as:

  • What is the .erfw file?
  • What program do I need to open a .erfw file?
  • How can the .erfw file be opened, edited or printed?
  • How can I convert .erfw files to another format?

Table of Contents

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

✅ Efficient Reminder v5 Data

ERFW file is an Efficient Reminder v5 Data. Efficient Reminder is a professional, cross-platform and easy-to-use software program which designed for managing date, meeting, events.
ERFW format description not yet available
Category: Data files
Application: Efficient Reminder
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
ERFW aliases:
ERFW related links:
ERFW related extensions:
Efficient Address Book v5 Data

Efficient Address Book v3 Data

Efficient Address Book v2 Data

Efficient Reminder v2 Data

Efficient Reminder v3 Data

Other types of files may also use the .erfw file extension.

🚫 The .erfw file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

edfw, erf, effw, rfw, efw

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

Efficient Diary v5 Document
Efficient Reminder v2 Data
Efficient PIM v5 Data
Rockchip Firmware
Efficcess Data
Reflection FTP Settings
CA Security Renamed File
Bioware Encapsulated Resource File
Epson RAW Image

🔴 Can't open a .erfw file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .erfw file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .erfw file extension, write to us!

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