What if the Windows system appears to be unable to activate this application when UAC is disabled?

UAC (that is, user Account Control) It helps prevent malicious software and spyware from being installed on your computer or making changes to your computer without permission. This is the problem when you open a PDF file, so how do you solve the problem, and then share the following two ways.

Method One

The first step, the Win+r key to open the "Run" window; enter "Regedit" carriage return;

The second step is to enter the running registry; Hkey_local_machine--software--microsoft--windows--currentversion--policies--system--enablelua

The third step, double-click Enablelua to change the numerical data to 1; Restart the computer;

Method Two:

The first step, the Win+r key to open the "Run" window, enter the "msconfig" (Can be copied) carriage return;

In the second step, select Tools, and select Change UAC settings.

The third step, click below to start, and then restart the computer to be effective;