Try upgrading to newer preview build, see if it helps.
Also, suggest you to run System File Checker scan:
1. Search for 'command prompt' using Cortana or Windows Search.
2. From results, right click on Command Prompt and select Run as administrator.
3. Type sfc /scannow command and press Enter key.
4. Let the command complete and then reboot the machine.
If that doesn't works, try these steps:
1. Search for 'windows powershell' using Cortana or Windows Search.
2. From results, choose Windows PowerShell and select Run as administrator.
3. Then type/paste following and press Enter key:
Repair-WindowsImage -Online -RestoreHealth
4. Let the command complete, restart your system then.
Let us know if this helps!