Updater not loading

[BasTijs]

When I click the update link in the control panel the page won't load at all. If I login in a new window it says autoinstaller busy but I'm not installing anything. Any ideas?

 

[BasTijs]

Seems to be working again, no clue what was wrong.

But I dont see the 8.4.0.1 update on the updater/autoinstaller. The last update is 14 may.