Why does AppVeyor say "Project not found or access denied" when opening a build?

This means you're not signed into AppVeyor. Follow these steps carefully:

1. Click "SIGN IN" link in upper right corner

2. Click the blue "GitHub" button under "Login with your developer account" on the left

3. Click the green "Authorize Application" button in the pop-up from GitHub

4. Click the "- select account -" menu and choose "PowerShell" (**not** your user)

5. Click the blue "GitHub" button below the menu

6. Go back to the original link you followed to AppVeyor and click it again

You should now be signed into AppVeyor and able to access our builds.