Thanks for posting.
According to information I received from Microsoft, since you are facing multiple issue it is best to perform Repair upgrade and check. Repair upgrade will not delete or remove anything from your system. Follow the steps from link below:
Also if you would like to go back to previous build of Windows 10 then follow the steps below:
1. Click on the Start menu and select Settings.
2. Now click on Update and security.
3. Now click on Recovery tab.
4. Under Go back to an earlier build select get started and follow the onscreen instruction.
Post back to let us know the status of the issue. The experts on this board will be happy to assist you further.