Select Cookies and make sure that other items you want to keep are not selected.Scan your computer for malicious files and then start over from Step 1. You might find that even after you instruct Firefox to delete the cached files, they still remain. Malware can sometimes make it difficult to remove the cache in Firefox. These files can range from tiny to quite large files, depending on what they’re for and what app created them.
Most Mac apps create temporary cache data. Set Time range to clear: to Everything. In each instance, Firefox clears the cache if the data was created within that time frame. It checks which files are safe to delete, so you don't accidentally remove essential files.Click History and then click Clear Recent History….Click the menu button and click Library (or click the Library button in the toolbar).
Locate the directory in Windows Explorer and delete the directory from your system. To remove the extension’s files, look at the directory specified under the Data column. The extension’s files will still be on your system, but the extension itself won’t be picked up by Firefox. To delete only cookies while keeping other data, do the following: To manually remove the extension, delete its registry value.
Note: You can use the Storage Inspector to remove individual cookies for a specific website, via the right-click context menu. If you encounter problem when trying to delete Firefox Developer Edition 40.0a2 as well as its associated components, read through this removal tutorial and learn about how to perfectly remove any unwanted applications on your Mac. To learn more about managing site data in Firefox, see Manage local site storage settings and Enhanced Cookie Clearing. In the Removing Cookies and Site Data confirmation dialog that opens, click OK.To remove selected items, select an entry and click Remove Selected.To remove all cookies and storage data for the website, click Remove All Shown.
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