Re: how can I fix "invalid registry value" for jpeg, windows 10
You do not give much info about your problem like which Windows version you have, is it with all JPEGS etc. But try to open the pictures with another program like paint and see if this works. It may be possible that you assigned a "wrong" program as "default" app to open jpegs.
If above does not help register and reply on this post.
Good luck.