Multiple errors related to Windows Update

Hello
I have been facing some regular errors. Frequently I get the error regarding 0x71ab6b17 referenced memory at 07x71ab6b17, this memory could not be written.
At microsoft.com/windows update/ I have been able to use automatic updates but for a while.
But now while the "Checking for updates for your computer…" screen starts running, always I get a new Application Error.
IEXPLOR.EXE the instruction at "07x71ab6afc referenced memory at 07x71ab6afc" This memory could not be "written"
