WordPress Username Requirements

wordpress 6.7 installation valid username'

In WordPress 6.7 (and earlier versions), valid usernames must follow these rules:

### Username Requirements:
1. **Allowed Characters**:
– Only alphanumeric characters (`a-z`, `A-Z`, `0-9`), underscores (`_`), and periods (`.`) are allowed.
– Spaces, special characters (like `@`, `#`, `!`), and accents are not allowed.

2. **Length**:
– Minimum: 1 character.
– Maximum: 60 characters.

3. **Reserved Names**:
– Usernames like `admin` or `administrator` may already exist or be disallowed based on specific security plugins or hosting configurations.

4. **Unique**:
– Each username must be unique within the WordPress installation.

### Tips:
– **Case Sensitivity**: Usernames are case-insensitive (e.g., `UserName` is treated the same as `username`).
– **Default Validation**: If you're using a plugin (e.g., UsersWP), additional validation rules may apply.

Let me know if you're encountering a specific issue during registration or installation.