If another instance is already running and you are unable to open an app, setup or game, check out the solutions mentioned here.

EXCLUSIVE: Peter Dinklage is about to star in the delayed remake of The Toxic Avenger, but his director is already talking about a sequel.

If you get A running instance of Acrobat has caused an error when using Acrobat Reader on Windows, use these solutions to fix the error.

"Future research should focus on understanding the movement ecology and connectivity." Researchers discover species missing ...