Setup
I am unable to start
For me, the issue was the installation of visual studio C++ redistributable. I tried to install it but was getting a setup failed error. Apparently, i had to go to windows update and allow all the important updates (the ones listed as important).
After restarting, i was able to install C++ redistributable. After it was installed, adb.exe worked correctly.
try this solution,
1) close Android Studio.
1) Delete the folder name platform-tools from Sdkfolder(find path from SDK Manager) folder.
2) Open Android Studio, in SDK Manager -> SDK Tools. checked the checkBox of Android Sdk Plateform-Tools and Apply.
3) now, Restart Android studio and try again.