By default your web browser will keep the cache. If you add a new Arc plugin, it might not appear in your browser. To see this new plugin, you will need to clear the cache.

If you are accessing Arc via a web browser, to clear your web browser cache, you just need to press SHIFT+F5.

Hit CTRL+SHIFT+DEL to access your web browser cache settings:

If you are accessing Arc via Arc Desktop, you will need to follow these steps to clear Arc Desktop cache:

1. Close Arc Desktop

2. Go to the C:UsersUserNameAppDataRoamingArcForTM1 (Enter %AppData% in a windows explorer to open the AppData folder.

3. Delete the cache folder

4. Start Arc Desktop (you should now be able to see the new plugin)