"This is not allowed!" or "Don't do this!" This large red cross is usually utilized when something is undesired. Can also be a sign of multiplication or kissing.
The cross mark emoji was introduced in 2010 and released as part of the Unicode 11.0 standard. This emoji can be found under the symbols
category. Because the cross mark emoji has been around for quite some time, it should display correctly in the majority of operating systems.