You can install Sketchbox from the Steam or Oculus stores. Sketchbox works on the Vive, the Rift and Windows MR headsets on Windows 7, 8 & 10.
Install Sketchbox from Steam Store
Install Sketchbox from Oculus Store
Click 'Get Started' and follow the instructions.
If you're still having trouble, please contact us here.
To install a beta build of Sketchbox via Steam, follow the instructions in the video below. We're always looking for people to test new features we cook up that aren't quite ready yet for primetime. If you want to test awesome new features before anyone else has them - send us an email here and we'll send you a key!
https://www.youtube.com/watch?v=BL9W7Yv_-uQ&ab_channel=Sketchbox