Scroll down and tap on (or Lock Screen and Security). Find the Unknown Sources option. Toggle the switch to On and accept the warning prompt. Step 2: Download the Correct APK File Open your Android device browser (such as Chrome).

The last stable official YouTube version that supports Android 5.0+ (API 21) is roughly in the range.

| Version | Release Date | Minimum Android | Architecture | |---|---|---|---| | 16.40.36 | Mid 2021 | Android 5.0 (API 21) | arm64-v8a / armeabi-v7a | | 16.40.34 | 2021 | Android 5.0 (API 21) | arm64-v8a / armeabi-v7a | | 16.40.33 | 2021 | Android 5.0 (API 21) | arm64-v8a / armeabi-v7a | | 10.40.58 | 2015 | Android 4.0.3 – 5.1.1 | arm64-v8a, API 15–22 |

To help find the right version, what is your device? Share public link

Go to Settings > Apps > YouTube and select Clear Data . This sometimes temporarily restores access, though you may need to repeat it frequently.

If you'd like, I can suggest if the old YouTube app is too slow.

Installing an old YouTube APK on Android 5.1.1 is a , not a long-term solution. Google has already shut down older YouTube app versions (pre-2020). Version 16.02.35 still works today, but it could break at any time if Google changes its backend API.