How to fix window 7 ,8,10 can not update?

Windows Update Cannot Check For Updates" error message when you try to install updates

https://support.microsoft.com/en-us/kb/2730071

Let me fix it myself

To start the Windows Update service, follow these steps for your version of Windows.
Windows 10

1. On the Start screen, type cmd. Alternatively, swipe in from the right, tap or click Search, and then type c.
2. Tap or click cmd in the search results.
3. At the command prompt, type the following commands, and press Enter after each command:
1. net start bits
2. net start wuauserv

Windows 8

1. On the Start screen, type cmd. Alternatively, swipe in from the right, tap or click Search, and then type c.
2. Tap or click cmd in the search results.
3. At the command prompt, type the following commands, and press Enter after each command:
1. net start bits
2. net start wuauserv

Windows 7 and earlier versions

1. Click Start, and then click Run.
2. In the Open box, type cmd, and then press Enter.
3. At the command prompt, type the following commands, and press Enter after each command:
1. net start bits
2. net start wuauserv

How to check whether the services are running

To check whether the services are running, follow these steps for your version of Windows.

Windows 10

1. On the Start screen, type Control Panel. Alternatively, swipe in from the right, tap or click Search, and then type Control Panel.
2. In the Search Control Panel box, type services.
3. Click View local services.
4. Make sure that the "Background Intelligent Transfer Service" service is running.
   
5. Make sure that the "Windows Update" service is running.

Windows 8

1. On the Start screen, type Control Panel. Alternatively, swipe in from the right, tap or click Search, and then type Control Panel.
2. In the Search Control Panel box, type services.
3. Click View local services.
4. Make sure that the "Background Intelligent Transfer Service" service is running.
   
5. Make sure that the "Windows Update" service is running.
   

Windows 7 and earlier versions

1. Click Start, and then click Control Panel.
2. Click Administrative Tools.
3. On the toolbar near the top of the Administrative Tools window, click the icon for the viewing options list, and then click Large Icons.
4. Double-click Services.
5. Make sure that the "Background Intelligent Transfer Service" service is running.
   
6. Make sure that the "Windows Update" service is running.
   

If the service for Windows Update is running, but the service still fails to check for updates, click the following article number to go to the article in the Microsoft Knowledge Base:

306525 How to configure and use Automatic Updates in Windows

 This is other way to fix this problem

Windows Update error 80070008 or 8007000e

Applies to Windows 7,8,10

Windows Update error 80070008 or 8007000e can often be fixed by running the Windows Update Troubleshooter, which can automatically find and fix some common problems with Windows Update.

These errors can happen if your computer runs out of memory while installing an update. If the Windows Update troubleshooter didn't fix the problem, try the following:

·         Close all programs, including ones that run in the background, such as firewalls, antispyware software, web accelerators, Internet security or antivirus programs, or proxy servers, and then run Windows update again.

If you turned off your firewall, antivirus, or other security programs, turn them on once the update has been installed. You can restart any other programs you closed, as well.

The problem can also occur when using Windows 7 Ultimate or Windows 7 Enterprise editions with a large number of language packs. If you have more than 20 language packs installed, follow these steps to remove unused language packs:

1.      Open Region and Language by clicking the Start button , clicking Control Panel, clicking Clock, Language, and Region, and then clicking Region and Language.

2.      Click the Keyboards and Languages tab.

3.      Under Display language, click Install/uninstall languages, and then click Uninstall display languages.

4.      Select any unused languages in the list, and then click Next. This can take a few minutes, depending on the number of languages.

5.      When the languages are uninstalled, click Close, and then click OK.

6.      Run Windows Update again.