.CLB File Extension

2 file types use the .clb file extension.

COM+ Catalog File

Developer Microsoft
4.3  |  11 Votes

What is a CLB 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.

More Information

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.

Open over 400 file formats with File Viewer Plus.Free Download

Programs that open or reference CLB files

Microsoft COM+

ICQ Contact List

Developer ICQ
2.6  |  8 Votes

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.

More Information

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

Programs that open or reference CLB files


Verified by FileInfo.com

The FileInfo.com team has independently researched all file formats and software programs listed on this page. Our goal is 100% accuracy and we only publish information about file types that we have verified.

If you would like to suggest any additions or updates to this page, please let us know.