What is wrong with my username?

Picture: I was signing up for Dungeons and Dragons Online, and I picked DnDMaster111 as my username. I got an error (this was the only error) that said my username was not valid, because a valid username can only have a-zA-Z1-9_,. I might just be tired, but I'm pretty sure my username doesn't violate any of that. Is this a bug, or is there a way to fix this?

technical-issues dungeons-dragons-online

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What is wrong with my username? - Side view full body fighting brothers in casual wear sitting on floor and pulling teddy bear to sides at home

How do I fix my username?

Change username

Open the Control Panel.

Double-click the Users and Password icon.

Make sure "Users must enter a user and password to use this computer" is checked.

Highlight the account you want to change the username for and click the Properties button.

In Properties, you can change the username.

Why is it saying my username or password is incorrect?

According to Windows enthusiasts, the \u201cThe username or password is incorrect\u201d at the login screen occurs due to the enabled \u201cUse my sign in info to automatically finish setting up my device after an update or restart\u201d option.

What does it mean when a username is invalid?

Invalid User Name/Password combination" error when trying to login to my account? Usually, this means that either the User ID or Password that you're using to sign in, is invalid. You will want to make sure that you're entering both your User ID and Password correctly.

How can I check my username?

Hi! We are here to help you.

While sitting at the computer that you want to be able to access, press and hold the Windows key and press the letter R on your keyboard. The Run dialog box is displayed.

In the box, type cmd and press Enter. ...

Type whoami and press Enter.

Your current username will be displayed.

They changed my roblox username.

Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.

Images: George Becker, Soulful Pizza, Victoria Borodinova, Victoria Borodinova