Win 10 Pro 22H2, Ethernet upload speed slow, Wireless and Ethernet in safe mode just fine

Thank You, i was literally out the door to buy new hardware [ethernet PCIE card] which i oviously didnt need, your post fixed my slow upload speed. i took a Dell update a few days ago that iam sure started this problem.

Hi, MidwestSteve,

My name is Cindy. I am sorry you are having this problem. I know it is really frustrating. I will do my best to help you with this problem.

Please note: This is a user-to-user community forum. We are users just like you who help others. We are not employees of Microsoft.

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Please turn and unplug the modem for 30 seconds. Then turn it back on. Restart your computer once the modem has come back on.

Check to see if the problem has been fixed.

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Make sure your computer is currently up to date.

Please type update in the search and open the page.

Update if necessary.

On the same page click on the additional or advanced options and update if necessary.

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Windows has a feature that allows users to scan for corruptions in Windows system files and restore corrupted files. I have enclosed the directions below. You can cut and paste the code.

1. Type cdm in the search box. Do not hit enter.
2. select Run as Administrator then hit enter.
3. Then type without the quotes. "DISM.exe /Online /Cleanup-image /Restorehealth" and hit enter.

On the same page run these scan one at a time.

sfc /scannow

DISM /Online /Cleanup-Image /StartComponentCleanup

Hardware troubleshooter

Please press Windows key + R Key

Paste the command below into the run box and press Enter:

msdt.exe -id DeviceDiagnostic

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Try Modifying the Internet Bandwidth Settings on your computer.

Press Win key and R key at the same time.

Type gpedit.msc and click OK.

Go to Administrative Templates

Click on Network

Select Qos Packet Scheduler

Click on limit reservable bandwidth.

Click to Enable and change the value to 100.

Click Apply & click OK.

Restart the computer and see if this fixes the problem.

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The next step would be to reset the IP address.

I know you have tried some of these but there are a few different ones.

Please copy and paste each onto the page one at a time in order.

I have enclosed the directions below.

Please click on the Windows Keys and the S key.

Type cdm on the search line (do not hit enter)

Select run as administrator. Then click on Run.

Enter each of the codes below in order.

ipconfig /release

ipconfig /flushdns

ipconfig /renew

netsh winsock reset

netsh interface ipv4 reset

netsh interface ipv6 reset

netsh winsock reset catalog

netsh int ipv4 reset reset.log

netsh int ipv6 reset reset.log

Please let me know if you continue to have a problem or questions.

Best Wishes,

Cindy

Surprised I figured it out. My PC (Dell) uses the Killer E2400 Gigabit Ethernet Controller. Turning off the Killer Prioritization Engine fixed this problem.