Still the same problem! Received Microsoft Store Error 0x80131500 always. nothing has help (reinstalling the ms store, reseted, enabled all the network permissions...). Disabling Kaspersky protection does not work. After closing the Kaspersky app, the Microsoft Store works fine. I deleted all files in C:\ProgramData\Kaspersky Lab\AVP21.3\Report\ now it works fine again. However, this was a serious error as I didn't get any notification from Kaspersky that MS Store is blocked by antivirus programs.
