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[ REPAIR GUIDE ] WI-FI AND INTERNET

Why is my upload speed so slow?

UPDATED NOVEMBER 20263 MIN READ8 FIXES

QUICK FIX

First check your plan's upload speed, since many plans offer far less upload than download. If your speed test is well below that number, pause cloud backups and syncing, test near the router or on an Ethernet cable, and restart the modem and router.

What it means

Upload speed is how fast your devices send data out, such as video on calls, files to cloud storage, or a live stream. Many home internet plans, especially cable and DSL, are built with much lower upload than download speeds, so a low upload number is sometimes normal. When it is lower than your plan promises, the usual culprits are backups, weak Wi-Fi, a VPN or the modem.

Common causes

  • Your plan has a low upload speed by design (common with cable and DSL)
  • Cloud backups, photo syncing or file uploads running in the background
  • Weak Wi-Fi far from the router
  • A VPN or security software slowing traffic
  • The modem or router needs a restart or update
  • Someone else in the home is on video calls, streaming live or uploading files

How to fix it

Work down the list. Each fix is safe to try before moving on to the next.

FIX 01Check your plan's upload speedEASY

  1. Look at your bill or provider account page for both download and upload speeds.
  2. Run a speed test near the router and look at the upload result separately from download.
  3. If the upload result is close to your plan's upload speed, your connection is working as sold.
  4. If it is far below, continue with the fixes below.

Why it helps: Many plans are much faster at downloading than uploading, so a low upload number may be normal.

FIX 02Pause backups and syncingEASY

  1. Pause cloud backup and sync apps such as photo libraries, OneDrive, iCloud, Google Drive or Dropbox on every device.
  2. Pause security camera cloud recording or large file uploads if you can.
  3. On Windows 11, open Task Manager (Ctrl + Shift + Esc) and check the Network column on the Processes tab for busy apps.
  4. Run the speed test again.

Why it helps: Backups can use all of your upload speed without you noticing.

FIX 03Restart the modem and routerEASY

  1. Unplug the router, then the modem.
  2. Wait about 30 seconds.
  3. Plug in the modem first and wait for its lights to settle.
  4. Plug in the router, wait a few minutes, and test again.

Why it helps: A restart clears temporary problems that can slow both upload and download.

FIX 04Test close to the router or on a cableEASY

  1. Run a speed test right next to the router.
  2. Plug a computer into the router with an Ethernet cable and test again.
  3. If the cable result is much better, improve your Wi-Fi coverage by moving the router or adding mesh Wi-Fi.
  4. For video calls or streaming from a desk, use a wired connection where you can.

Why it helps: Weak Wi-Fi hurts upload as much as download, and a cable removes Wi-Fi from the picture.

FIX 05Turn off VPN and check Windows sharingMEDIUM

  1. Disconnect any VPN and test again.
  2. On Windows 11, open Settings > Windows Update > Advanced options > Delivery Optimization.
  3. If Allow downloads from other devices is on, turn it off, or choose Devices on my local network so your PC does not share update files with computers on the internet.
  4. Restart the device and test again.

Why it helps: VPNs add overhead, and Windows can share update files with other PCs using your upload.

FIX 06Update your device and routerMEDIUM

  1. Windows 11: Settings > Windows Update > Check for updates.
  2. Mac: System Settings > General > Software Update. iPhone: Settings > General > Software Update.
  3. Android: Settings > System > Software updates, or your phone maker's update menu.
  4. Router: check for a firmware update in its app or admin page.

Why it helps: Software updates fix network bugs that can cause slow speeds.

FIX 07Test directly from the modem and call your providerMEDIUM

  1. If you have a separate modem and router, connect a computer straight to the modem with an Ethernet cable.
  2. Run several speed tests.
  3. If upload is still far below your plan, contact your provider with your results.
  4. Ask whether your modem supports your plan's speeds and whether there are line problems in your area.

Why it helps: If speed is low directly from the modem, the fix is on the provider's side.

FIX 08Consider a plan with more uploadADVANCED

  1. If you regularly do video calls, live streaming, or upload large files, check what upload speeds your provider offers.
  2. Fiber plans often have upload speeds much closer to their download speeds than cable or DSL plans.
  3. Compare available plans and providers at your address.

Why it helps: If your plan's upload speed is the limit, only a different plan can raise it.

Check it's fixed

  • Speed test upload results match or come close to your plan's upload speed.
  • Video calls stay clear and others can see and hear you without freezing.
  • Files and photos upload to the cloud in a reasonable time.

When to get help

If upload is far below your plan even on a cable plugged into the modem after a restart, contact your internet provider. If only one computer uploads slowly, a repair shop can check its network adapter.

Questions

Why is my upload speed so much lower than download?

Many cable and DSL plans are designed that way because most households download far more than they upload. Check your plan; it may list a much lower upload speed.

What upload speed do I need for video calls?

Requirements vary by app and video quality. Check the requirements published by your video calling app, and remember that several people calling at once need more.

Why is my download speed slow but upload is fine?

That often points to congestion, many devices downloading at once, or weak Wi-Fi. Restart the modem and router and test near the router or on a cable.

Related fixes

Why is my internet so slow?Restart your modem and router, then run a speed test close to the router. If it is fast there but slow elsewhere, it is a Wi-Fi coverage proHow to fix a weak Wi-Fi signalMove the router to a central, open, raised spot away from walls, cabinets and appliances, then restart it. If some rooms are still weak, addHow to reset your router (restart or factory reset)Unplug the router and the modem from power, wait about 30 seconds, plug the modem back in first and wait for its lights to settle, then plugWhy does my Wi-Fi keep disconnecting?Restart your modem and router and move closer to the router to test. If only one device keeps dropping, forget and rejoin the Wi-Fi network

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