Records some errors reported by the Extension Manager. It can be safely deleted to resolve various issues. The file is automatically generated by nsExtensionManager and is used by low-level code to detect chrome packages and XPCOM components provided by installed addons.
Lists folders of installed extensions and themes. This file is automatically regenerated and can be deleted to resolve various issues. It is used, for example, to register extensions installed by dropping a folder into one of known install locations. Lists installed extensions, their IDs, and the folders they are installed to, along with their last-modify time. Can be deleted to resolve slow downloads or program hangs ( Bug 159107)ĭownload history. No information on what its used for.ĭownload history. It can be used to replace text in the user interface. This used to be stored in the address book. The permissions.sqlite and content-prefs.sqlite files store the permissions for what what remote content can be displayed. Automatically regenerated whenever XPCOM registration process is triggered. Replaced with extensions.ini in Thunderbird 1.5 and above. Lists extension folders with XPCOM components.
This file is automatically generated and can safely be deleted. Thunderbird 3.x appears to use the version information to decide whether to display additional tabs such as the migration assistant and whats new. When the profile is loaded with an application with a different version/path, the XPCOM components registration process is triggered. Stores the version and path of the application this profile was last used with. There is a similar file in Firefox profiles used by localstorage/DOMStorage to store about: pages. It appears to store the host name, thus preventing you from creating a security exception for a rotating SMTP server. This is an optional file used to store a security exception. It works together with key4.db, and should be copied together. It works together with ke圓.db, and should be copied together. Used by the Lightning add-on if the "Cache" option is enabled in the calendar properties, to provide offline support. Replaced by kinto.sqlite around version 60. Suspect it is used with the blocking listĪdded list of dangerous extensions. Temporary empty file that signals a change in the installed extensions. If any are read-only it might be a side effect of having put files on removable media, and then copying them or restoring them back to your profile.
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