If Android Studio doesn’t know which module to use, it will display this error. The most confirmed causes include missing or incorrect Gradle files, improper project structure, or issues with the build/run configuration. Now that you understand the causes, let’s move on to the solutions.
1. Specify the Module(s) in the Gradle File
An Android Studio project can contain multiple modules, and it’s important to declare them all in the settings.gradle file. Each part of the project may depend on a different module to function properly. By including all modules in the Gradle file, both the IDE and build system can correctly identify and use the necessary modules especially in multi-module projects.
2. Disable Antivirus and Manually Sync the Gradle File
Some antivirus software can interfere with the build process by blocking file access or restricting Gradle’s network activity, which is essential for updating the build system or downloading dependencies. Temporarily disabling the antivirus may help Android Studio perform a smooth sync.
Disable the Antivirus:
Start by temporarily disabling your antivirus software (typically Windows Defender).
Syncing the Gradle file manually:
After disabling your antivirus, manually sync the Gradle file to allow Android Studio to reconfigure the build process.
3. Delete the .idea Folder
The .idea folder stores essential Android Studio settings, such as project structure and Gradle configurations. If this folder becomes corrupted or out of sync with the project, it may trigger the error. Deleting the .idea folder and reopening the project forces Android Studio to regenerate the folder with fresh settings. This can help resolve any misconfigurations and correctly identify the module.
