Computer type Laptop System Manufacturer/Model Number Asus K52F OS Win 7 x64 Home Premium (and x86 VirtualBox VM) CPU i3 370M Motherboard Asus Memory 8GB - finally :) Graphics Card it's an i3, dude! Sound Card onboard Monitor(s) Displays 15.6" built-in Screen Resolution 1366x768
PSU n/a Hard Drives 750GB Seagate internal
Sundry external drives attached to other computers on the local network Internet Speed as much as I can get - usually on a dongle, so <1Mb/s Antivirus MSE Browser IE10/Chrome/FF(if I must)
windows unknown error 8024402f when checking for updates.
I also tried many solutions including new clean OS installation but none worked.
As soon as I uninstalled .net 4 and installed .net 4.5, updates were available again
thankyou for all the details, they were extremely helpful.
After days of trying to find out whats causing the problem, I found out that an update to .net was the culprit (KB982670). I uninstalled .net and did a check for updates. When I installed the update, afterwards I would get the same error. After uninstalling again .net and hidding the update, It works fine eversince.
After hours of trawling the net and and running reg fixes, removing .net 4 client fixed the problem.