What is .CLB file extension?
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.
You can see a list of software programs here on easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.