FG

Where in the registry does Windows store with which program to open certain file types?

Fresh3 days ago
Mar 15, 202665193 views
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Problem

After installing Adobe PDF reader, it opens files with the file extension. Ones' default web browser opens files and notepad opens files, etc. Where exactly in the registry are these filetype - program associations stored in the registry? In other words, how does Windows know with which software/pr…

Error Output

.PDF

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Fix for: Where in the registry does Windows store with which program to open certain file types?

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The open with associations are all stored in . This is a special registry hive that combines the local user's associations in with the system's associations in . Here's a shot from my registry for the PDF association you mention in your question:

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