WinBuild blog https://winbuild.dev/blog/ Practical fixes for Expo Android release builds on Windows: path too long, Java 17, Gradle memory, signing, verifying an AAB and slow builds. en Tue, 20 Oct 2026 18:00:00 +0000 Why your Expo Android build takes 30+ minutes on Windows, and what actually makes it faster https://winbuild.dev/blog/expo-android-release-build-30-minutes-windows-what-makes-it-faster/ https://winbuild.dev/blog/expo-android-release-build-30-minutes-windows-what-makes-it-faster/ Tue, 20 Oct 2026 12:00:00 +0000 Where an Expo Android release build spends 30+ minutes on Windows, and what we measured: fewer ABIs helped; a dependency cache and parallel Gradle did not. How to verify an AAB before uploading it to Google Play (target SDK, 16 KB alignment, certificate) https://winbuild.dev/blog/verify-aab-before-google-play-target-sdk-16kb-certificate/ https://winbuild.dev/blog/verify-aab-before-google-play-target-sdk-16kb-certificate/ Tue, 20 Oct 2026 12:00:00 +0000 Check an Android App Bundle on Windows before uploading it to Google Play: target SDK 36, 16 KB native library alignment, upload certificate, signature. Signing an Expo Android release locally with your EAS credentials, without leaving passwords on disk https://winbuild.dev/blog/sign-expo-android-release-locally-eas-credentials/ https://winbuild.dev/blog/sign-expo-android-release-locally-eas-credentials/ Tue, 20 Oct 2026 12:00:00 +0000 Sign an Expo Android release on Windows with your EAS upload key without writing passwords into gradle.properties: AGP injected signing properties. An apostrophe in your Windows user name can break Expo Android builds (and how to work around it) https://winbuild.dev/blog/apostrophe-windows-user-name-expo-android-build/ https://winbuild.dev/blog/apostrophe-windows-user-name-expo-android-build/ Tue, 20 Oct 2026 12:00:00 +0000 An apostrophe in a Windows user folder can break Gradle workers and AAPT2 in Expo Android builds. Why it happens and how to move build tools out of the way. OutOfMemoryError: Metaspace in lintVitalAnalyzeRelease: why your Expo release build dies at the end, and how to fix it https://winbuild.dev/blog/outofmemoryerror-metaspace-lintvitalanalyzerelease-expo/ https://winbuild.dev/blog/outofmemoryerror-metaspace-lintvitalanalyzerelease-expo/ Tue, 20 Oct 2026 12:00:00 +0000 Why an Expo Android release build dies at the end with OutOfMemoryError: Metaspace in lintVitalAnalyzeRelease, and how to give Gradle memory, lint on. React Native Gradle plugins need Java 17: fixing "Cannot find a Java installation … matching: {languageVersion=17}" on Windows https://winbuild.dev/blog/react-native-gradle-java-17-toolchain-windows/ https://winbuild.dev/blog/react-native-gradle-java-17-toolchain-windows/ Tue, 20 Oct 2026 12:00:00 +0000 Why Gradle on Windows fails with "Cannot find a Java installation … languageVersion=17" in React Native 0.86 builds, and how to point it at a full JDK 17. Fixing ninja's "Filename longer than 260 characters" in Expo Android builds on Windows https://winbuild.dev/blog/fix-ninja-filename-longer-than-260-characters-expo-windows/ https://winbuild.dev/blog/fix-ninja-filename-longer-than-260-characters-expo-windows/ Tue, 20 Oct 2026 12:00:00 +0000 Why Expo Android native builds on Windows stop with ninja's "Filename longer than 260 characters", why long paths are not enough, and the short-path fix.