New Facebook App Update Not Working | New 2019

Got this myself on my phone, and also it simply rejected to upgrade. Here's what helped me.

Edit: this appears to be a concern that Facebook recognize. It's a concern with the Facebook app, and not a generalised Play Shop concern.

This is what helped me at the very least.

  1. Settings > Applications > All > Google Play Store, Clear data and Clear cache

  2. Settings > Apps > All > Google Play Solutions > Manage area, Clear all information as well as Clear cache


It doesn't harmed if you reboot your phone prior to you attempt upgrading facebook once more. And, the mount was SLOW. Simply at the very least 4-5 mins. However, it did job. Otherwise try to uninstall it, or just wait on a repair.
Facebook Update Problem