Registry error problem, a common problem who is using windows operating system. When you’re installing a software you might make it default application but when your uninstalling, automatically on the process it will remove some important files and shortly it will create clash with other applications. Sometime, it will hang your applications, sudden error, error messages, system not working.
File Extension Cache giving you the solutions. Officially to making clear about it, they explains, “you install a new piece of software that becomes the default editor for a file format on your computer. When you uninstall that software, does it remember to change the default editor back to the previous software you were using?”. Hope you understand? You can get free scan options to checkout what registry file already removed or any missing file or solve the error messages problems.
Let us know by comments, what types of problem you’re having face.