File Extension Library

.CLB File Extension

  • Developer by: Microsoft
  • Category: System Files
  • Format: Binary

What are .CLB files and how to open them?

Can't open .CLB 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 .CLB file.

What is a .CLB file extension?

.CLB file extension is created by Microsoft. .CLB has been classified as System Files. The format of .CLB file is Binary.

.CLB is COM+ Catalog File

File used by Microsoft COM+, a service on Windows operating systems that allows components to communicate with each other; contains COM+ application, class, and computer-level attributes; store information that provides consistency across computer services.

CLB files are commonly found in the COM+ registration database, which is located in the %windows_directory%\registration folder. They use the naming convention R00000000000X.clb, where X is a letter or number.

File Type 2 ICQ Contact List
Developer by: ICQ Category: Data Files Format: Binary

File created by ICQ, an online chatting program; contains user contacts, including their unique ICQ number, aliases, and other contact information; used to create backup copies of contacts.

NOTE: ICQ for Mac, which was once available, is no longer offered by

List of all softwares that can open the ICQ Contact List

How to fix problems with .CLB files

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