Having problems opening an ECF file?

We have programs that can open or convert your ECF files.

Opening ECF files

Did your computer fail to open an ECF file? We explain what ECF files are and recommend software that we know can open or convert your ECF files.

What is an ECF file?

Files that contain the .ecf file extension are most commonly associated with the Microsoft Outlook email and calendar software application.

The ECF files that are used with the Microsoft Outlook software contain add-ins that allow users to install extra features into the Outlook application. The add-in files can be managed using the Add-In Manager that is found in the "Advanced Options feature in the Outlook program.

The Microsoft Exchange Server also uses the .ecf file suffix. These ECF files contain exchange extended configuration files, which are the configuration files that are used to configure the Microsoft Exchange software program.

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About File Extension ECF

File.org aims to be the go-to resource for file type- and related software information. We spend countless hours researching various file formats and software that can open, convert, create or otherwise work with those files.

If you have additional information about the ECF file format or software that uses files with the ECF suffix, please do get in touch - we would love hearing from you.