You may have joined Teamwork projects in the past that are no longer active; in this case, you should delete the unneeded local data that is just taking up space on your machine.
The Local Data Manager (Teamwork > Project > Local Data Manager) feature gives you feedback to help you manage the local data from Teamwork projects you have joined.
Topics in this section:
Get Feedback on Local Project/Library Data
Move Local Teamwork Data to a Different Folder