Emrys Davies wrote:
I have Internet Explorer 11, 32 bit and Windows 7 Home Premium, bit 64.

Windows Update will not download and install updates except the very
very odd one. So far there are thirty updates missing. The main error
number is 80073712. Can anyone solve this for me please.

For Windows 7, you use a CheckSUR download from the bottom of the page.
Try to select a matching download, for your system setup.

https://support.microsoft.com/en-ca/...date-readiness

They're also available from Catalog.

https://www.catalog.update.microsoft....aspx?q=947821

The files should be updated for those, as time passes.
Download a fresh one, before using it. One a year old isn't
much good to you.

*******

On Windows 10, it's easier.

Dism /Online /Cleanup-Image /CheckHealth

Dism /Online /Cleanup-Image /ScanHealth

Dism /Online /Cleanup-Image /RestoreHealth

*******

The CheckSUR should be similar to a RestoreHealth.

Paul