Originally, I almost ran out of space on my C: drive. Some of the Windows updates started to fail. I cleared space on my C: drive, and when I ran a file scan, I found some corruption in my files. I was getting errors browsing with Edge, especially when watching videos online.
I tried repairing the OS, which improved the environment, but I was still encountering errors when browsing with Edge. Today, I decided to back up my data and reinstall the OS from scratch. I uninstalled all old software, formatted my OS drive, and reinstalled the OS.
The system has been running smoothly since then. I no longer get errors browsing T-Mobile and other sites. I believe that was all that was needed, and now I am operating in a stable environment again. I can browse T-Mobile sites and watch streaming videos without any errors.