Troubleshoot “Something went wrong” startup errors on Xbox
Step 1: Can you bring up the Xbox Startup Troubleshooter? Did this resolve the issue? Still need help? Chat online or request a call if available. Troubleshoot errors from the “Something went wrong” startup screen on Xbox.
Xbox Support
Xbox Support ... Xbox Support
Troubleshoot multiplayer connection errors | Xbox Support
Find solutions for errors when you run the Xbox multiplayer connection test.
Xbox Status | Xbox Support
Check the Xbox services, games, and apps for any service outages.
NDR error codes 550 5.7.703, 550 5.7.705, 550 5.7.708, and 550 5.7.750 ...
Only an email admin in your organization can fix this issue. If you're an email admin, follow these recommendations: Add and validate all domains in Microsoft 365 that you use to send email messages. This is the most common solution. Use a certificate-based outbound connector.
A driver can't load on this device - Microsoft Support
Find out the steps you can take if you receive a message telling you a driver can't load on your device.
“NAT Type: Unavailable appears in your network settings
Learn what to do when you receive a NAT type: Unavailable error message on Xbox.
My Xbox controller has connection issues after the last update
Learn how to revert the firmware on an Xbox controller if you’re experiencing Bluetooth connection issues.
“UPnP Not Successful” appears in your network settings
Sign in to your router's setup webpage, and make sure the router's UPnP setting is turned on. You can usually find first-time help with this in the router manual or on the manufacturer's support site. Turn the UPnP setting off and save your changes. Restart your console, your modem, and your router.
Repair apps and programs in Windows - Microsoft Support
You can repair some apps and programs if they're not running correctly. Note that you won't see repair, change, or modify options for all apps and programs. Repair options from the Settings page. Select Start > Settings > Apps > Installed apps. Select the More icon next to the app you want to fix.