.9 file extension - YoutubeAdBlocke file
What is .9 file? How to open .9 files?
File type specification:
The .9 file extension is associated with the YoutubeAdBlocke, an extension for Chrome, Firefox and Internet Explorer web browsers.
The .9 file stores some kind of data used by YoutubeAdBlocke.
The YoutubeAdBlocke is reported by potential malicious software! Do not install it to your web browser!