How to solve the problem of key set invalidation in installation software under Win8.1 system

The Win8.1 system has been around for some time, occasionally encountering the problem that when installing some software, you will be prompted that the registered key set is invalid, resulting in the inability to install.

I try to install a few software, including the Bing Dictionary and the Dark Box plug-in will have this problem, and other software such as 115 network disk will not. How can we solve this problem?

This may be due to a serious problem with the system components, it is best to perform the "Recover computer without affecting the file" operation, recover the system with minimal impact to solve the problem.

The method is as follows:

1. Move the mouse to the lower right corner of the screen, call out the Charm bar, click the Gear-like "settings" button.

2. Click "Change computer Settings"

3. Click "Update and Restore"

4. Click "Restore"

5. Click "Start" according to your needs in the corresponding position.

The above is the solution that prompts the registered key set to be invalid when the Win8.1 system installs the software. System component problems common method is difficult to solve, can only take to recover the computer without affecting the file to deal with.