APK not working made from Android Studio V 2.3.3

I have updated my Android Studio from 2.3.2 to 2.3.3.

Now, when I try to install APK generated in \app\build\outputs\apk, the App gets installed but it just flicks and exists.

It used to work fine before but it's not working since yesterday, and I have tried 2-3 different projects also but no use.

Solution

Your manual way of generating APK is not generating the correct APK, so i am Suggesting these way to generating APK for Manual Install:

For Debug Build

Delete you build folder inside the App folder.
Goto Build>Build APk. it will generate .apk file in your app>build>output>apk directory.
COPY it your device and install manually.

For Release Build

Delete you build folder inside the App folder.
Goto Build>Generate Signed APk and provide recomended Details, make sure your Build type : release and have checked both signature version v1(jar signature) and v2(full apk signature) . it will generate .apk file in your app>build>output>apk directory.
COPY it your device and install manually.