Broadly, the four solutions are to reset the Microsoft Store app, check for updates, run the Microsoft Store troubleshooter (in Windows 10 only), and try updating your internet's TLS settings.

So, what causes the 0x80131500 error? Various potential causes include an unstable Internet connection, firewall blocking access, incorrect proxy settings, or even a missing Windows update.

If Microsoft Store keeps opening itself and popping up automatically on your Windows PC it is like that the Store Cache has become corrupted.