Try this link:
and follow the instructions from this section of page:
Delete Software Distribution folder
This one is user suggestion Solution : Some Users suggest Delete / Rename the software distribution folder ( which store the windows update files and folders ) will fix almost 90% windows update installation problems include Fix We can’t install some updates because other updates are in progress. New Created software distribution folder will download and install updates without any problem.
Open Command prompt as administrator then stop the fallowing windows services ( windows update and BITS ) using command bellow.
There are steps to follow after this and it did work for me.
One thing that I did do was just make a new folder on my desktop and instead of deleting the contents of the Software Distribution Folder (in case this didn't work) I just moved ALL the contents into the new folder and then followed the instructions and that did the trick.