Non app store download

[fandroid18]

I went to security and allowed third party downloads but on the screen I can't press install only cancel. Not sure how to download this emailed app.

 

[Rukbat]

If it's an installable apk file, the install button should be active, whether you have 3rd party downloads enabled or not. (If it isn't, trying to install will send you back to settings to enable it again.) If the install button isn't enabled, it's probably not an installable apk.

 

[fandroid18]

Grrr they sent me a crap app than

 

[jmacdo]

If I have certain apps running, I can't install .apks.
Something like like Lux or Bluelight filter may cause this.