Cannot install update (KB2538243) - Error 0x80070643

I keep getting this error, I have attempted to install it several times without success. How do I get this update to install?

Thanks

I keep getting this error, I have attempted to install it several times without success. How do I get this update to install?

Thanks

Have a look at this thread, perhaps it will fix your issue as well
Can't install update KB3081448, get error 0x80242006

Thanks for your reply, I have followed all the steps but the update still won't install and gives the same error!

Thanks for your reply, I have followed all the steps but the update still won't install and gives the same error!

Ok, I left out a step: the DISM command requires that a source for Windows 10 be available to make repairs. I forgot that I made these changes before I ran the initial set of instructions.
Try this first, then run the other steps:

press WindowsKey+R, type gpedit.msc and press Enter.
Click "Computer Configuration", click "Administrative Templates", click "System", and then double-click the "Specify settings for optional component installation and component repair" setting.
Select "Enabled", click check box for "Contact Windows Update directly...." - apply and OK

Thanks for getting back to me, I have done the gpedit thing and then re-done the cmd stuff but still no joy.
Update not installed and same error code....

Did you download the off-line update or did you let the auto-update do it's thing?

I just let auto update do it's thing, how do I download the off-line update?

I just let auto update do it's thing, how do I download the off-line update?

I cannot find KB2538243 offline for Windows 10 - you sure it's a windows 10 patch?
looks like all patches for Windows 10 starts with 30, available offline patches can be downloaded from here: Software Point - Technology Simplified

HA! Found it! Download Microsoft Visual C++ 2008 Service Pack 1 Redistributable Package MFC Security Update from Official Microsoft Download Center

Don't worry, it says that it only supports Windows 7 or lower, but Windows 10 should work.

HA! Found it!

Not for Windows 10:
Supported Operating System
Windows 7, Windows Server 2003, Windows Server 2008, Windows Server 2008 R2, Windows Vista, Windows XP