Instructions for Customers to give us access:
Type 'Remote Assistance' in search bar under Start button.
Click on Windows Remote Assistance. You will see following page.

Click on 'Invite Someone you trust to help you' link.
This will show you following page.

Click on 'Save this invitation as a file' link. Save the file on desktop. Do not change name of the file or anything else. Click save on following window.

Now Copy entire text from following window and email this and above file to me.

Instructions for us to view customer's machine:
When you get an email from user with password and invitation file, save the invitation file to desktop.
Type 'Remote Assistance' in search bar under Start button.
Click on Windows Remote Assistance. You will see following page.

Click on 'Help someone who has invited you' link.
It will show you following screen. Press on "Use an invitation file" link.

Select the invitation file that you have saved on the desktop. Enter the password that user has provided you. User will get a notification that someone wants to access your machine and they will allow us the access.