WIndows 7 won't update,get error 80070643

I've been trying every suggestion out there to get my machine to install updates. Running Win 7 Home Premium 64 bit. This seems to be a very common problem but I can't find the fix. Anyone here have an idea?

I tried that route several months ago and it didn't work. Still getting 80070643 code when I try to update Windows. I've tried all the suggestions on Microsoft's support site. Hard to believe that as common as this code is that MS hasn't released a patch or something.I've even tried restoring to a point a year ago and that didn't work. It will install certain updates but not all,and usually chokes on anything recommended or security types of updates.

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