Some SD card-stored apps not updating

[anon9989719]

As @Incanus has indicted :

A little guide to... using SD cards

Android 6 introduced new options for using an SD card in your phone. When you format an SD card or insert a new SD card, you’ll have two options: Internal/phone/adopted storage or external/portable storage. The option that most closely matches older Android versions is the external option. There are a couple of things to take into account when choosing which option works best for you: TL;DR: Formatting as internal will allow you to store apps on it and have it encrypted with the system interna…