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adb commands not recognized

my adb commands in windows cmd are not recognized. I have done the following and am trying to install a custom boot animation
-Installed android SDK
-Installed Java SDK
-Have phone charging only while in debugging mode
-Added environment variable on windows 7 pc
First install of sdk yielded no recognition of adb commands, reinstalled and adb help command worked so downloaded the bootanimation i wanted, went back to command, ran adb command again - not recognized as valid command. So it seems the adb script commands just aren't sticking...arrggg
UPDATE : I have adb running commands now, but my device is not recognized [error: device not found] I have installed the google usb drivers and manually installed them on my computer but do not know if they are working correctly, there are three:
-Android ADB interface
-Android Bootloader interface
-Android composite ASD interface
FIXED : 1.Needed HTC Sense driver for adb inteface, found standalone driver 2. adb commands wouldn't run unless your in the adb directory - duh

[Q]Xperia Miro not showing up in adb devices !! Need help

Hello all,
I have installed android sdk, google usb drivers etc. I am using windows Xp. My phone is upto date as per the Sony PC companion installed in windows. When I try to connect my phone in usb debugging mode to adb, its not showing up. when I give adb devices it doesn't list any devices.
when I give adb shell, it says device not found. I tried all methods like kill-server, start-server and killing adb.exe etc. after I went thru the existing threads in this forum. Nothing works !!
And the interesting thing that I could not figure out is about the device manager. After I try all methods it says drivers not installed. I try to install google usb drivers as well by browsing the folder in my android sdk . It was displaying like 'nothing found to install'
Any ideas please ??

One update.
Google usb drivers were not being installed correctly. When I update driver and browse to the Android SDK folder where the Google USB drivers present (My case .... Android SDK-> Extras-> Google -> usb_driver) it says 'nothing to update'
Then I edited android_winusb.inf file there and included my device ID (as showing up in Device manager). And it installed the drivers.
Then I opened adb again. And gave 'adb devices' and finally I could see my device listed !!!!
But still one major problem exists. That the device is getting disconnected continuously from adb and each time I would have to restart the adb and this makes it useless....
Not able to figure out why ...

Try using this: adbdriver . c o m
If it does not work try flashtool's drivers

[Q] device not detected though conncted and shown in device manager

My pent ws 708 c is connected to the computer pdanet3.02 is installed it shows in device manager as Android composite ADB interface. but in command prompt under list of devices attached there is no number nothing.i am able to access internet through the device on xp but when trying to take backup using sdk command prompt says adb unable to connect to device. what needs to be done?

glad to use technology said:
My pent ws 708 c is connected to the computer pdanet3.02 is installed it shows in device manager as Android composite ADB interface. but in command prompt under list of devices attached there is no number nothing.i am able to access internet through the device on xp but when trying to take backup using sdk command prompt says adb unable to connect to device. what needs to be done?
Click to expand...
Click to collapse
if you are accessing internet you cannot access adb at same time you need to disconnect internet tethering to access device from adb

situation remains same
Well the situation is absolutely the same even after diabling tethering

Samsung SM?T230NU 5.0- ADB Shows Unauthorized Device

adb shows Unauthorized device on custom ROM for SM-231
I successfully rooted my SM-230NU and installed the custom ROM provided in this post
http://forum.xda-developers.com/tab-4/development/rom-android-5-0-lollipop-material-t3061873
However, when I connect the device using USB to my Mac and try "adb devices" I get "unauthorized" beside the device ID. I have already tried the following:
a. on the Mac: adb kill-server followed by adb start-server
b. on the Mac: Deleted the ~/.android/adbkey and ~/.android/adbkey.pub
c. on Device: Revoked the USB debugging access to all computers (on the device) and also via terminal emulator app verified that on the device /data/misc/adb/ directory is empty
d. on PC: Repeated all the above on a Windows 7 machine (still shows "unauthorized" beside the device ID)
e. Changed multiple cables and tried the same cable with other devices and they are all detected as valid devices.
Unless I get the device to be recognized I am not able to install some apks using adb install. Any help will be highly appreciated.

Cannot see Moto G XT1034 in adb

Edit: [SOLVED] I also had to copy over AdbWinUsbApi.dll from platform-tools. Derp.
I am running Windows 10 Pro on a Surface Pro 3. When I enter "adb devices" into a command line, there is nothing under "list of devices attached." USB debugging is enabled.
Initially I copied adb, AdbWinApi.dll, and fastboot to another directory from platform-tools from the Android SDK. Then I installed the Motorola Device Manager. But adb could not see my device. I then installed Minimal ADB which did not help. After that I uninstalled Motorola Device Manager and solely installed the drivers from this thread http://forum.xda-developers.com/showthread.php?t=2550635, including the additional file, which also did not work. But if I launch adb using Android Studio, and then typing "adb devices" into a command line, adb can then see my device. What does Android Studio do or use that is different? How can I make adb see my device solely from command line?