Hi,Monsieur Johnson
There are 3 step to repair microsoft .net framework 3.5 error
I think your computer is already very dangerous, and you should fix it immediately. I had the same problem with you, it bother me for a long time. I have searched many ways online and found that the following method is the best, my friend had microsoft .net framework 3.5 error too, he also quickly fix microsoft .net framework 3.5 error with the following method. I think you should try it, I hope it can help you:
1: Download a microsoft .net framework 3.5 error repair tool,install this error repair tool.
2: Open microsoft .net framework 3.5 error repair tool and scan you computer for free
3: Then click the Repair All Button again and your done! It is very easy to repair microsoft .net framework 3.5 error.
Here are the url of microsoft .net framework 3.5 error repair tool:
http://www.RepairErrorQuick.com/ttfix-microsoft_.net_framework_3.5_error-zz0001