Error xxxx-xxxx-xxxx-xxxx-C800-0036 occurs when you try to download an update for the Xbox 360 console

Problem

You see the following error when you try to download an update for the Xbox 360 console:

xxxx-xxxx-xxxx-xxxx-C800-0036

Note The “x” digits vary according to several factors, such as region or country.

This may mean that your console has been tampered with or modified. This also means that your console has been banned from Xbox Live and can no longer connect to Xbox Live, install software updates, or play new games that require a console software update. Learn about Xbox Live console bans.

Solution

Unfortunately, this problem can’t be resolved, and you won’t be able to sign in or connect to Xbox Live. However, you can still play games offline. You have to physically disconnect your network cable or remove your Xbox 360 Wireless Network Adapter from the console.

You can use the following steps to turn off the automatic sign-in so that you can play games offline. To turn off auto sign-in:

Restart your console.
Select No if you’re prompted to update your console software.
Press the Guide button on your controller.
Go to Settings, and then select Profile.
Select Sign-in Preferences.
Set Profile Auto Sign-in to “Off.”
Press B on your controller to return to the Xbox Dashboard.

Your console can now play your existing games offline. Any future attempts to sign in to Xbox Live or update your console software, however, will result in an error.