Yesterday my Lumia 640 (running Windows 10 Mobile 1703) restarted several times in the off-hours. I was thinking it just installs updates but as far as I can tell there were no updates installed.
But since that, a number of apps in the app list now have a subtitle that reads "Pending". Some of the apps came back to life when I clicked them, others just refuse to start. I have an SD card inserted and think this could be SD card related, or maybe not. I have set to install new apps to Phone (but some of the apps may have been installed before on the SD card). Who knows that behavior, what does it mean?