Cannot access Microsoft store

Hey I would try the steps here first https://windowsreport.com/xbox-error-0x8000ffff/

The recent outage of Xbox Live is fixed, except i'm still unable to access the store:

0x8000FFFF

Hi,

you can also use:
https://www.xbox.com/ to buy your games/membership etc..

you can try powercycling your console, How to
Power cycle

if you still have issues with getting on the website and still showing that error then it still could be on xbox's end.

edit; you can also restart your router/hub to see if it your end also.

Hi Drew. My name is Kyle and I'm an independent advisor.

Are you getting any errors? Try to provide some images of this problem if possible.

Try power cycling your Xbox:

Turn off your console by holding the Xbox button on the front of the console for approximately 10 seconds. Once the console is off, turn it back on by pressing the Xbox button on the console or controller. ​​​

No I haven't.

Update: I have and it's presumably updated and I still cannot access the store nor I can install anything.

This page might be able to help.

You can also look up other error codes here for future reference.

https://support.xbox.com/en-US/error-code-lookup?code=0x80004003