What to do if your Samsung Galaxy S9 Plus smartphone is not recognized by your PC (easy steps)

Data management in mobile devices, particularly file transfers and firmware upgrades are done with the use of computers and certain mobile data management software. To make this happen, you need to connect your device to your computer using a USB connector or compatible data cable. But there are some instances and/or factors that can interfere with the process. And this is when syncing problems occur.

Tackled in this post is a similar issue on the Samsung Galaxy S9 Plus smartphone, wherein the device is not recognized by a Windows PC. Read on to find out what to do when this issue occurs to you, when trying to connect your Samsung smartphone to your Windows PC.

Now, before anything else, if you have other issues with your phone, make sure you drop by our troubleshooting page for we have already provided solutions to hundreds of problems reported by our readers. Odds are that we may have already provided a solution to the problem you currently have so try to find issues that are similar with yours on that page and feel free to use the solutions we suggested. If they don’t work or if you need further assistance, fill up our Android issues questionnaire and hit submit to contact us.

How to troubleshoot your Galaxy S9 Plus that can’t be recognized by your PC

Before you begin to troubleshoot, make sure you are using the original or Samsung supplied USB connector or data cable that came with your device. Some cables may not be compatible with your phone system, so they won’t work as intended. Also ensure that the USB port you’re using is working. You can switch between ports to find out which port is working or not. Once you’ve done that all and still end up with the same issue, go ahead and troubleshoot your devices.

Troubleshoot software problems on your phone

To rule software issues on your phone out from the underlying cause, perform the following procedures.

First workaround: Soft reset or device restart.

Corrupted cache files can trigger software errors to occur and likewise affect some of your phone functions. To rule this out, you can dump cache files by restarting or performing a soft reset on your device. Here’s how:

  1. Press and hold the Power button for a few seconds until the power options show up.
  2. Select Power off then tap OK. Your phone then turns off.
  3. After 30 seconds, press and hold the Power button again until your phone boots up.

Alternatively, you can do a force restart with these steps:

  1. Press and hold the Volume down button first and don’t let it go.
  2. Now, press and hold the Power button while holding down the volume down button.
  3. Keep both buttons held down together for 10 seconds or until the device power cycles.

A soft reset won’t affect any data you’ve saved on the internal memory, thus won’t result to data loss. Try that first and then reconnect your phone to your computer to see if the problem is fixed.

Second workaround: Update device software to the latest Android version available.

Software bugs and malware are also among the culprits. To eliminate them from the possible triggers, installing an update on your device can help. Software updates usually contain fix patch to address and rid of any bugs and malware from your phone system. Here’s how to get started:

  1. Swipe up from the bottom of the Home screen.
  2. Tap Settings.
  3. Scroll to and select Software Update.
  4. Select the option to Download updates manually.

Your device must be connected to Wi-Fi internet, with ample power and memory space to download and install software update via over-the-air. Follow the onscreen instructions to complete the update file download and installation. And don’t forget to restart your phone when the update is done installing. This will ensure that all new system changes are properly implemented and therefore prevent your device from acting up.

Third workaround: Enable USB debugging mode on your phone.

USB debugging is among the key features of the Developer Options or Developer Mode on an Android smartphone including your Galaxy S9 Plus. With Developer Mode enabled, you will have access to hidden features on your device and configure some of them when needed or if you want to customize your phone. Here’s how to enable Developer Mode and USB debugging option on your Samsung Galaxy S9 Plus smartphone:

  1. Turn on your phone.
  2. Go to Settings.
  3. Scroll down and tap About Device.
  4. Tap Software Info.
  5. Scroll down and find Build Number then tap on it seven times.
  6. You will then get a message saying that, “You’re now a developer” or something similar.
  7. If you see that message, go back to Settings and you should now see the Developer Options menu.
  8. Tap on Developer Options to view available options then including USB Debugging. Simply tap to enable the option.

At this point, you should be able to connect your phone to your PC and perform firmware upgrades or any other sort of data management. If that won’t work, then you need to troubleshoot your computer.

Troubleshoot your PC

If the problem persists after troubleshooting software problems on your phone, then most likely the problem is on the computer system. In that case, attempt to troubleshoot system errors on your PC with these workarounds.

First workaround: Reboot your computer.

Random system glitches on the computer can also cause syncing problems. Usually, these can be resolved by rebooting the system. If you haven’t already, then carry out the usual restart procedure on your computer to dump errant files and clear the internal memory.

Second workaround: Remove any other external devices from your computer then reboot system.

Other external devices attached to your computer’s USB ports can also cause conflict especially when the system is glitching. To prevent this from happening, remove any USB devices from your computer and then plug your phone in. This will ensure that the computer system is not reading any other device except your Samsung device.

Third workaround: Disable security software or firewall temporarily

Some security software may block access to any external devices when a security threat is perceived. Your phone will be read as an external device when it’s plugged into the computer via USB. Thus, it’s possible that it’s blocked by your security software. To rule this out, you can either disable the security software on your computer temporarily or configure it to grant access to your phone. For further assistance in configuring the security software settings and grant permissions, you can contact the software developer or Microsoft Support.

Fourth workaround: Manage USB drivers on your computer.

To access and manage USB drivers on a Windows PC, navigate to the Device Manager section. A list of all drivers will populate the screen along with their current status. Some drivers may need to be updated, uninstalled, or reinstalled on your computer in this case. To expand the USB drivers menu and see which drivers require actions, tap on the + before the driver headers. Drivers with an X mark, question mark, and exclamation mark on them are the ones that require appropriate actions.

If you are not sure of which drivers to use or manage, then you may contact Microsoft Support or the manufacturer of your computer for further assistance. They will walk you through a step-by-step process on how to manage necessary drivers for your computer to recognize your Samsung device.

Connect with us

We are always open to your problems, questions and suggestions, so feel free to contact us by filling up this form. This is a free service we offer and we won’t charge you a penny for it. But please note that we receive hundreds of emails every day and it’s impossible for us to respond to every single one of them. But rest assured we read every message we receive. For those whom we’ve helped, please spread the word by sharing our posts to your friends or by simply liking our Facebook and Google+ page or follow us on Twitter.

Posts you may also like to check out:

Photo of author


Harold has been in the tech industry since 2008 when he started out as a tech support for companies like Time Warner, Comcast and Tracfone. He’s been troubleshooting phones when the smartphone industry started booming. During his tenure as a tech support, he’s already been writing for various tech blogs and doing some freelance SEO. In 2012, he joined a small team of bloggers to write for The Droid Guy, and he has been with the company ever since. Today, he doesn’t only write tutorials and troubleshooting pieces but also shoots and edits videos for The Droid Guy channel while trading stocks on the side.

Posts you might like