When I create a new project in Android Studio 2.3.3 I get the following error:
Your Android SDK is missing, out of date, or is missing templates. You can configure your SDK via Configure | Project Defaults | Project Structure | SDKs
Can you help me solve this problem?
The error you describe indicates that Android studio does not find the folder where the Android SDK is located, or some files are missing from it. Go into configuration and check that the path to the folder is correct, and if it is correct open the SDK manager and check that you have no broken packages. If the SDK you have it right, I would not have to give you more faults.