Photos will not upload from my computer to any websites

I have been downloading pictures to Facebook, Walgreens, and Shutterfly for 3 years with no problems. All of a sudden I can not upload any pictures! I had no difficulties downloading them from my memory card to my computer and I can view them just fine. When I go to upload them it will let me select the pictures I want and start the process, but then just keep "loading" or "thinking" for hours if I would let it. It will not upload even one photo. Please help, I have tried reading everything on this and nothing is helping.

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What browser are you using IE, Firefox, etc.? Have you tried more than one browser?
Jerry

It is Internet Explorer 9...I don't know how to try a different browser. I just don't understand how this happened after 3 years of no problems!

You said that you downloaded before - did you ever upload before. And to which site are you trying to upload anyhow.

Yes, I have uploaded lots of times. I actually just uploaded pictures 2 weeks ago with no problem. I have tried several websites to upload and they all do the same thing. I have tried Facebook, Walgreens photo, Shutterfly...all just keep loading, but never actually finish. I even let it load for over an hour (which it has never taken more than a minute in the past) and it was still just thinking and no picutres went through.

What is your Antivirus program. There is a possibility that it might hold things up.

I use Kaspersky...

I am not too familiar with Kaspersky - have not used it in eons. But there is a check for outgoing data. Have a look what that setting is and set the checking to 'off'.