adb server version (40) doesn't match this client (41); killing

Question

Couldn't start project on Android:

adb server version (40) doesn't match this client (41); killing...
could not read OK from ADB Server
* failed to start daemon
adb.exe: failed to check server version: cannot connect to daemon

i have installed android platform development tools but it still doesn't work even after changing Genymotion settings to use my android Software development kit instead of its default android tools

Solution

In my case the problem occurred because of two ADB paths. I actually moved my Android SDK (due to lack of space in system drive) from one path to another and set up the environment variables accordingly. Starting and killing the server didn't help so I followed this thread in GitHub

But unlike that thread, instead of replacing the files in scrcpy folder, I replaced the files in C:\Program Files\Genymobile\Genymotion\tools

And it started working after that

Comments

[brian omondi]

which package name specifically

[Jane Alam]

Your app package name

[brian omondi]

now i get this error could not read ok from ADB Server * failed to start daemon error: cannot connect to daemon - waiting for device - error: cannot connect to daemon

[brian omondi]

plus when i do expo start i get the same error as before

[Jane Alam]

You can try kill server and restart the server again adb kill-server adb start-server OR 1. adb kill-server 2. sudo cp ~/Android/Sdk/platform-tools/adb /usr/bin/adb 3. sudo chmod +x /usr/bin/adb **4. adb start-server ** Try to execute the above 4 commands one by one.

[brian omondi]

i am on a windows pc so sudo cp command are not recognizable

[Jane Alam]

Ignore **sudo for windows. From your Android studio command line run the above command.

[Martins]

You saved me 2 hours of Googling dude, works like a charm.

[Jalakam Kiran]

Thanks a lot dude...You saved lot of my time