How can i fix my alt windows and ctrl keys from not working.

Hi and thanks for reaching Microsoft Xbox gamer's community. My name is Josef.
I'm an Independent Advisor and a Microsoft Xbox user like you.

Hope you're doing great today despite this Ice

Please note that changing the registry key values can damage your system or it can start to have a different behavior

May I know if you backed up the registry key or the values that you modified?
If yes, please revert these changes and verify if ctrl and alt work again

Hello,

Welcome to Microsoft Community.

Let me work with you to solve the problem of keyboard key combinations not working.

Does this only happen when running Roblox games?

Can you use these keys properly on other page? If they work properly on other page, then you can rule out a system problem.

In addition，Please try to perform a clean boot in Windows, so that you can determine whether a Third-party software program is interfering with your game or program.

How to perform a clean boot

1. Sign in to the computer as an administrator. If you are unsure if your account has administrator rights, see Create a local user or administrator account in Windows to find out how to see if your account has administrator rights, and grant them to your account, if necessary.
   
2. Select Search , type msconfig , and then select System Configuration from the list of results.
   
3. On the Services tab of System Configuration, select Hide all Microsoft services, and then select Disable all. Select Apply.
   
4. On the Startup tab of System Configuration, select Open Task Manager.
   
5. On the Startup tab in Task Manager, for each Enabled startup item, select the item and then select Disable. (Keep track of which items have been Disabled. You will need to know this later.)
   
6. Close Task Manager.
   
7. On the Startup tab of System Configuration, select OK. When you restart the computer, it will be in a clean boot environment. You can click How to perform a clean boot in Windows for more details about clean boot.
   

Disclaimer: A “clean boot” starts Windows with a minimal set of drivers and startup programs. It helps to determine whether a background program is interfering with your game or program and to isolate the cause of a problem.

These steps of "clean boot" might look complicated at first glance. However, to avoid any trouble for you, please follow them in order and step-by step so that it will help you get you back on track.

Best Regards,

Lenka-MSFT| Microsoft Community Support Specialist

KatieBooty, by "entire computer freezes" do you really mean you can't use the computer by pressing any keys on keyboard (like pressing Windows key to try showing the start screen, pressing Ctrl+Alt+Del to open Task Manager), or just the games fall into login
loop indefinitely? Those are different.

Hello, how are you? My name is Mateus. I'm an Independent Advisor and I'll be glad to help you today.

First, welcome to the Xbox community.

I recommend you try the solution below, please.

1. Open windows task manager by pressing keys Ctrl-Alt-Delete simultaneously.



2. Select the Processes to tab at the top of the task manager window.

3. In turn select every instance of "iexplore.exe" and end the process.

4. Close task manager.

Check if it works again.

*If that doesn't work, try the solutions provided in the article below.

https://www.techsupportall.com/how-to-fix-doubl...

*See also the videos below, they can help you.

https://www.youtube.com/watch?v=pPVhRrsNk-Y

https://www.youtube.com/watch?v=9G6WVql0Y2k

*Thank you in advance for contacting us, it is always a pleasure to be able to help.

Try restarting the Xbox app if on windows use task manager (ctrl + alt+ delete) to close it.