Windows just updated to its newest software and when it did, I was no longer able to run Illustrator 2018 or any of the latest versions of Illustrator or Phtoshop . I received the following error message (picture attached):
Sorry to hear about your experience. Have you tried using the Illustrator 2021? If you have the similar issue, it might be caused by the latest Windows 10 update. Please try uninstalling the update & let us know if it helps.