Have you been able to get updates before this ?
Is this a genuine software ?
Is your system malware free ?
Do some online scans for malware. You can find some links below. And run these in cmd prompt :
REGSVR32 C:\WINDOWS\system32\wuapi.dll
REGSVR32 C:\WINDOWS\system32\wuaueng.dll
REGSVR32 C:\WINDOWS\system32\atl.dll
REGSVR32 C:\WINDOWS\system32\wucltui.dll
REGSVR32 C:\WINDOWS\system32\wups.dll
Exit
Is this a genuine software ?
Is your system malware free ?
Do some online scans for malware. You can find some links below. And run these in cmd prompt :
REGSVR32 C:\WINDOWS\system32\wuapi.dll
REGSVR32 C:\WINDOWS\system32\wuaueng.dll
REGSVR32 C:\WINDOWS\system32\atl.dll
REGSVR32 C:\WINDOWS\system32\wucltui.dll
REGSVR32 C:\WINDOWS\system32\wups.dll
Exit