Dear ANA,
Hello! Welcome to the Microsoft Community.
It looks like you are having a major issue after the update and files in Windows Explorer are not opening. I understand! I will do my best to help you.
First you can run a clean boot to exclude third-party applications and check if the problem persists. If so, it is likely that the latest update has a compatibility issue with your device. It is recommended that you roll back the update and then temporarily disable updates for a while.
Try to use clean startup, and check whether the problem still appears after eliminating the influence of third-party soft armor and services. If the problem is solved, you can follow the steps of clean startup to find the problematic software.
How to perform a clean boot in Windows - Microsoft Support
Disclaimer: A “clean boot” starts Windows with a minimal set of drivers and startup programs. It helps to determine whether a background program is interfering with your game or program and to isolate the cause of a problem.
These steps of "clean boot" might look complicated at first glance. However, to avoid any trouble for you, please follow them in order and step-by-step so that it will help you get you back on track.
- Uninstall the update: Open "Settings", click "Windows Update", click "Update History", scroll down, find "Uninstall Updates", then find the updates you recently made and uninstall them. Restart your computer and see if the problem is alleviated.
- Roll back the version: Open "Settings", click "Windows Update", click "Update History", scroll down, find "Recovery", check if there is a "Go Back" option, which should be available if you updated within ten days.
- Check the system restore point. Search and open "Recovery", then click "Open System Restore". Follow the instructions and check if there are any available restore points. If you have one, consider using it. But be aware that a system restore point will reset your computer to the state it was in at that point. Any changes you made during that time will be deleted.
Feel free to let me know if you make any progress.
Best wishes
Pyke.D | Microsoft Community Support Specialist