Windows Update - Error 0x80007005

I know its a while since I posed this question and I apologise if I haven't already posted what I think was the solution - at least in my case. I think I resolved the problem in the end by manually downloading the update from the Microsoft site (i.e. not using the inbuilt Windows Update process) and I believe running the update from this downloaded file resolved the problem. I imagine the issue is probably somehow related to permissions but as we know Microsoft error messages are far from comprehensive when it comes to telling us why something has failed, so often we have to just surmise. Anyway I believe I resolved the problem this way on two occasions.