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# Deleting "Ghost" extensions from FireFox
- URL: https://blog.tsd.digital/deleting-ghost-extensions-from-firefox/
- Published: 2006-11-24T16:18:23.000Z
- Updated: 2006-11-24T16:18:23.000Z
- Author: Tim Gaunt
- Tags: Internet, Software, #Import 2025-04-01 05:34

Since updating [Firefox](http://www.mozilla.com/en-US/firefox/?ref=blog.tsd.digital) to v1.5 I had a number of extensions that I couldn’t remove from the list because they were greyed out, this was somewhat irritating as I had the later versions installed too and so I was getting duplicates (see below)

![Firefox Ghost Extensions](https://storage.ghost.io/c/64/5b/645b11c2-b436-444c-a523-58dca4ca7bd8/content/images/img/tn_Firefox-Ghost-Extensions.png)

Today I decided to see if I could resolve this, it turns out removing these ghost/incompatible extensions is fairly simple:

1. Close any instances of [Firefox](http://www.mozilla.com/en-US/firefox/?ref=blog.tsd.digital) you have open
2. Navigate to %Documents and Settings%\\Username\\Application Data\\Mozilla\\Firefox\\Profiles\\\*.default\\
3. Backup the file: “extensions.rdf”
4. Open “extensions.rdf” in a text editor i.e. Notepad or [TextPad](http://www.textpad.com/?ref=blog.tsd.digital)
5. Find the line that starts with: <RDF:Seq RDF:about="urn:mozilla:item:root">

Below is a list of the extensions you have installed, I can only talk about my case but the ones that were greyed out extensions in [Firefox](http://www.mozilla.com/en-US/firefox/?ref=blog.tsd.digital) were the ones that had a resource value of a URL rather than “urn:mozilla:item:{Guid}”. My file looked like this:

![Firefox Ghost Extensions](https://storage.ghost.io/c/64/5b/645b11c2-b436-444c-a523-58dca4ca7bd8/content/images/img/tn_Firefox-Ghost-Extensions-example.png)

Simply delete these lines from the file, save it and restart [Firefox](http://www.mozilla.com/en-US/firefox/?ref=blog.tsd.digital). All should be back as it should be now…