This article introduces how to enable the Guest account in Windows 10.
Open PowerShell with administrator privileges and enter the following commands.
Enable Guest Account
net user guest /active:yes
Disable Guest Account
net user guest /active:no
Windows 10 Has No Guest Account? How to Enable It and Important Considerations - Livedoor News
Important Considerations When Enabling Guest Account
As mentioned in the link above, enabling the Guest account may have negative effects on your computer.
If you consider why the Guest account is not enabled by default, you can probably guess the reasons.
In fact, after I enabled the Guest account, I encountered extremely critical bugs such as being unable to open certain settings and being unable to configure restore settings. (I’m not saying the Guest account is 100% the cause. There were also cases where themes were the cause. However, it seems highly likely.)
Since it was a virtual environment, it wasn’t a huge loss, but if you’re going to enable the Guest account, I recommend thinking carefully before doing so.