Hello! I have varified the extentions and all but I still get this message when I try to use it:
"Unable to execute the selected tool.
You do not have the necessary license to execute the selected tool. ERROR 010096: There is no Spatial Analyst license currently available or enabled."
If you are licensed for the extension in the ArcGIS Adminsitrator, there is an additional step - you need to turn on the extension within the desktop application.
For example, in ArcMap: Customize/Extensions, set the checkbox for "Spatial Analyst"
You probably just need to activate the extension. In ArcMap, click Tools > Extensions at the top, then place a check beside the extensions you have registered. I hope it can help you!
