Hi Dyionne,
The error message that you're getting likely occurs if there are many applications running on your computer at the same time. Other factors that can contribute to the issue are insufficient system resources, corrupted system files, corrupted hardware and drivers, and software conflicts. To troubleshoot your explorer.exe issue, we suggest performing an in-place upgrade. It's a process of installing Windows 10 without removing the current Windows version installed on your computer. To perform an in-place upgrade, we suggest performing the steps provided by Andre Da Costa on this link. This will repair corrupted system files while preserving your personal files, settings, and installed applications. You can also check this link for the video tutorial on how to perform an in-place upgrade.
Get back to us with the result for further assistance.