Hi, thanks for your reply.
However, I never set my connection (wifi connection) to metered. I tried setting it as metered and setting it back as non-metered, but to no avail.
I've tried the WSReset.exe fix, the AUInstallAgent folder fix, I even reset my PC, but the 0x8020002e and sometimes 0x80073cf9 errors still persist. Good thing I saved a system image file, I recovered my PC immediately.
This is getting frustrating, I've been waiting for a solution for this since December. Still, I appreciate the tip. :)