Updating to Android Studio 2.3 - "Cannot delete" file Error Android Studio can be a challenging IDE to get going with. Customizing settings, connecting to version control systems, configuring the interface, updating... There are enough sources of headaches to thoroughly demoralize the new developers. Recently, while updating to a new version of Android Studio (2.3) in Windows 10, I came across a very stubborn error that looked like this in the console window: Cannot delete file C:\Program Files\Android\Android Studio1\gradle\m2repository\com\android\tools\layoutlib\layoutlib-api\24.5.0\layoutlib-api-24.5.0.jar Unfortunately, the error always appears in the last stage of the update as a patch is being applied. It appears that this stage requires API level 24.5 libraries be deleted and replaced with API 25.2 and 25.3 libraries. Attempting to delete the .jar file [layoutlib-api-24.5.0.jar] manually results in an error saying the file is opened by the Java SE process or s