❓Error: app not installed, how to fix?

Some of our users encounter the “application not installed” error. The reason lies in the settings of your ANDROID device.


  1. Go to device settings
  2. In settings, select “privacy protection”.
  3. Some have a “Special permissions” item below.
  4. Next, click “external sources”; on other phones there may be “unknown sources”.
  5. All that remains is to activate the switch for ALMAZ app!