Use Remotely for remote support.

Navigate to

Click the file relevant to your OS (Likely "Windows (64-Bit)")

Portable instant support clients section of the download page.

Save the file

Prompt to save file in Firefox.

Open the file

Download accessible from download tab in Firefox

Windows will pop up a warning page. Click "More info" then "Run anyway".

Enter "" into the prompt that opens. (This step may not be needed if you've done this before.)

Hostname window that will connect your program to my server.

Share your Session ID with me.

Main window with Session ID populated.

You will soon have a "Connection Request" notice. This is you authorizing me access to your machine. Click "Yes".

Prompt allowing access to machine.