How to Fix the USB Debugging Grayed Out (easy steps)

This is the ULTIMATE blog post to instantly get rid of the grayed-out USB debugging option on any Android device, whether it’s from Samsung, Motorola, or any other smartphone brand. I’ve included all the necessary screenshots and attachments to make it easier for you to follow along.

cropped screenshot of grayed out usb debugging

How I Fixed It Instantly

When USB debugging is grayed out on an Android device, the issue is often due to the device being in the wrong connection mode. To fix this, I switched the connection mode from “Charge Only” to “File Transfer” (MTP) or “PTP” mode. This change allowed the USB debugging option to become selectable immediately. Restarting the device after this change can also help.

screenshot of default usb configuration to select menu

Now, here are a bunch of fixes you can follow: ensure Developer Options is enabled, connect your phone in “File Transfer” mode instead of “Charging”, restart your phone while connected to the PC, or try a different USB cable/port. If all else fails, toggling Developer Options off and on again might refresh the settings and make USB debugging accessible.

Solutions to Greyed Out USB Debugging for Any Android

Fix 1: Disable Auto Blocker (for Samsung specific)

In some cases, I had to go to the Security and Privacy settings, find Auto Blocker, and disable it to resolve the issue.

Lavey from Android Stack Exchange suggested, “Just go to Security and Privacy in your settings, scroll down to additional security settings, and select Auto Blocker. I turned the whole thing off, but there’s an option for ‘Block software updates by USB cable’ which is probably the actual setting that prevents you from turning on USB debugging.”

screenshot of security and privacy menu with auto blocker marked
screenshot of samsung auto blocker menu
screenshot of turned off auto blocker form the android

I learned that some security settings like Auto Blocker can interfere with the ability to enable USB Debugging.

  1. Settings: Find the “Settings” app.
  2. Security/Privacy: Look for “Security,” “Privacy,” or similar.
  3. Auto Blocker: Find the “Auto Blocker” option.
  4. Disable: Toggle the switch to “Off.”
  5. Confirm: If prompted, confirm your choice.

Fix 2: Unplug the Device and Reconnect

One of the first things I tried when USB Debugging was grayed out was unplugging my phone from the USB cable and then attempting to enable USB Debugging again.

checking the cables for usb internet

As Tycoon from stackoverflow mentioned, “Unplug your phone from the PC and go to developer options and now here you can enable USB debugging. If you connect USB and try to enable debugging it will not enable.”

I found that USB Debugging often gets grayed out if the device is already connected to the PC. Disconnecting the phone can sometimes reset the setting, allowing me to enable it.

Fix 3: Change USB Connection Mode

Another solution I tried was switching the USB connection mode to MTP (Media Transfer Protocol) or PTP (Picture Transfer Protocol) from the notification menu that appears when I connect my device.


oriadam from StackOverFlow shared their experience with a Samsung Galaxy A53: “For a Samsung Galaxy A53, pulling down the status bar and changing the use USB option from ‘Charging phone only’ to ‘Transferring files’ allowed the USB debugging toggle to become available again.”
screenshot of default usb configuration to select menu

I realized that the mode selected for USB connection affects whether the USB Debugging option can be enabled. MTP or PTP modes are generally required for debugging features.

Fix 4: Install PC Drivers

I also made sure that the correct drivers were installed on my PC. Sometimes, the drivers need to be installed or updated for the device to be recognized correctly.

David from Android Stack Exchange mentioned, “I needed to install drivers from the phone’s notification when connecting via USB. After installing the drivers, I was able to connect through ADB to debug.”

screenshot of updating usb driver on pc

I realized that proper drivers are essential for communication between the device and the PC, which can affect debugging capabilities.

Fix 6: Enable Developer Options

Another important step I took was ensuring that Developer Options was enabled by tapping on Build number in Settings -> About phone multiple times. After this, USB Debugging became accessible.

developer options in settings

Amit from Android Stack Exchange provided the following instructions: “Go to `Settings -> About phone -> Software Information -> Tap Build number five times. A pop-up will appear saying ‘You are now a developer’. After enabling Developer Options, you should be able to toggle USB Debugging.”

I learned that USB Debugging is only available when Developer Options is enabled.

Fix 7: Check for My Knox Installation

If using a Samsung device with My Knox installed, I tried disabling or uninstalling it to resolve the issue.

Source. suggested, “If you have ‘My Knox’ installed, disable or uninstall it and try to activate USB debugging again.”

I found that My Knox can sometimes block USB Debugging features.

Fix 8: Switch USB Cable

I also made sure that the USB cable I was using was a data cable and not just a charging cable.

image of two usb cable one cable is of a charger and other is of tabletop fan

This issue happened to me very recently while I was writing an article about USB tethering being greyed out. When writing articles, I usually recreate the problem first and then try to resolve it. While attempting to connect using a USB Type-C cable, which was paired with my desktop fan, I found that my device was only charging and not showing options like file transfer, Android Auto, or USB tethering. All these options were disabled.
After switching the USB cable from the original one that came with the charger, I was finally able to see the USB tethering option. Moreover, I could now transfer media files and perform other functions that occur when you connect an Android device to a PC using USB.

I realized that not all USB cables support data transfer, which is essential for enabling debugging.

Fix 9: Disable or Enable Other Security Features

Finally, I checked other security features or apps that might block USB Debugging, such as auto-blockers or corporate security software.

Now, if you are using any antivirus application on your Android or simply using any app that resists USB connections, like when you try to connect your phone to the PC, it may automatically disable all the features that come with connecting your phone to the PC. In some cases, for me personally, I was using the Next 3 cable, which has lock protection so no one can just plug my phone into their PC and do whatever they want. Toggling on USB debugging might help. So, I tried turning that feature off and then installing the antivirus app.

By systematically working through these solutions, I was able to resolve the issue of USB Debugging being grayed out on my Android device. It’s important to remember that the specific solution may vary depending on the device and the underlying cause of the problem.

How I Fixed This In Samsung

screenshot of usb debugging marked which is greyed out

After checking out a lot of videos on this topic, it’s clear that many people are struggling with the USB debugging option in developer settings not turning on. This issue is particularly common on Samsung phones. The reason is that Samsung introduced a new auto blocker feature in recent updates, which blocks all kinds of data updates using the USB debugging option.

screenshot of security and privacy menu with auto blocker marked
screenshot of samsung auto blocker menu
screenshot of turned off auto blocker form the android
screenshot of usb debugging not turning on marked from developer mode

As a result, when this option is disabled, users like you and me on Samsung devices can’t turn on USB debugging because it’s completely grayed out. The easiest way to fix this is by simply turning off the ‘Auto Blocker’ option in Security and Privacy settings. You can disable the auto blocker completely.

Additional Tips and Considerations

  • Backing Up Data: Emphasize the importance of backing up data before making changes.
  • Third-Party Tools: Briefly mention the availability of third-party tools for USB debugging.
  • Troubleshooting Resources: Provide links to official documentation and community forums.

Conclusion

That’s it for the blog post today. All the things and fixes I showed you above can actually solve the issue when the USB debugging option turns gray and you can’t toggle it on. This can be followed on any Android device with any Windows PC, and similarly on a Mac too, because some of the steps are literally the same.

I hope you found the information helpful! If you did, please let me know in the comment section. If you have any doubts or related questions, you can easily contact me here.

Samuel
Samuel
I'm Samuel, a technical author with expertise in mobile technology. I write how-tos and fixing tutorials for a variety of tech products, including Android phones, iPhones, and Macs. I have a deep understanding of how these devices work and the common problems that users experience.I'm passionate about sharing my knowledge with others and helping them learn more about mobile technology and how to fix common problems. My tutorials are clear, concise, and easy to follow, and I provide step-by-step instructions with screenshots and videos.I'm confident that my skills and experience make me a valuable resource for anyone who wants to learn more about mobile technology or how to fix common problems.

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