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ACLCDDB file extension

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

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

✅ Apple Address Book Changelog Database

ACLCDDB file is an Apple Address Book Changelog Database. Address Book is a personal contact management application made by Apple Inc.
ACLCDDB format description not yet available
Category: Data files
Application: Apple Address Book
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
ACLCDDB aliases:
ACLCDDB related links:
ACLCDDB related extensions:
Apple Address Book Mail Recent Data

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

🔴 Can't open a .aclcddb 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 .aclcddb 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 .aclcddb file extension, write to us!

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