Recently I updated my android studio, after the update, I am unable to find android device monitor option in the tools section. In the previous update it was there in to
You still can run it from File explorer on Windows 10 with the proper path. You just need to go to C:\Users\user\AppData\Local\Android\Sdk\tools\lib\monitor-x86_64
and double click the file monitor.
If you want to use in the cmd just the 'monitor' command you have to add this folder (in my case with android studio 3.4.1 and win10) to your Environment variables. So, press the start button and then type Edit the system environment variabes
click it and System properties window should open. Then go to
Environment variables => System variables => path
press the Edit
button for path and add the new value
C:\Users\user\AppData\Local\Android\Sdk\tools\lib\monitor-x86_64
click 'Ok', 'Ok' and 'Ok' and restart the cmd window if you had it opened and type 'monitor' and it should open the monitor as well.
Hope it helps!
PD: This answer was based on this answer https://stackoverflow.com/a/55077068/5360905 from Tiago Martins Peres