Definition Update for Windows Defender - KB2267602 (Definition 1.203.1452.0) - Error 0x80070643

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Solution
Hello Eslam Gad

Sometimes this error occurs due to inapplicable KB update and sometimes the old definitions prevent you from updating.

You can try opening Windows Defender and then try updating the KB from within its interface.

In case Windows Defender fails to update, you can:

> Right-click anywhere on the desktop and go to New > Shortcut.

> Create a shortcut for the %SystemRoot%\System32\Cmd.exe /c Cleanmgr /sageset:35 & Cleanmgr /sagerun:35 command.

> Right-click the shortcut and run the created shortcut as administrator.

> After this, right-click the Start button.

> Click Command Prompt (Administrator) from the context menu.

> Click Yes on the User Account Control confirmation box.

>...
Hello Eslam Gad

Sometimes this error occurs due to inapplicable KB update and sometimes the old definitions prevent you from updating.

You can try opening Windows Defender and then try updating the KB from within its interface.

In case Windows Defender fails to update, you can:

> Right-click anywhere on the desktop and go to New > Shortcut.

> Create a shortcut for the %SystemRoot%\System32\Cmd.exe /c Cleanmgr /sageset:35 & Cleanmgr /sagerun:35 command.

> Right-click the shortcut and run the created shortcut as administrator.

> After this, right-click the Start button.

> Click Command Prompt (Administrator) from the context menu.

> Click Yes on the User Account Control confirmation box.

> In the opened elevated command window, type Dism /Online /Cleanup-Image /StartComponentCleanup and press Enter.

> Try updating the KB this time.

If the issue persists, this link and this link may be of some help.

Let me know which of the above solutions work for you.

Cheers!!
 
Solution


Thanks for ur Help
It's Done
By uninstall all .net and install it again again
https://support.microsoft.com/en-us/kb/976982
And
by Cmd Command " DISM /Online /Cleanup-image /Restorehealth "
And Clean windows by Ccleaner last version
 
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