Visitor
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2 Messages
Slow Upload Speed
My net has constantly gotten worse over the past 2 weeks. My upload speed is tanking throughout the day. Even with an upgraded modem, provided by comcast, I'm still experiencing low or even 0 upload speed on tests.
BruceW
Gold Problem Solver
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27.4K Messages
3 years ago
Are you connecting via Wifi or Ethernet? If Wifi, it's best to switch to an Ethernet cable connection if possible for testing. That would allow you to determine whether the problem is the Wifi signal or the link between your modem or gateway and Comcast's network. Network connection problems that affect both Ethernet and Wifi devices are often due to poor coax connections or damaged coax cable, usually in or near your home. Running the cable through a surge protector, a defective splitter, or too many splitters can cause signal problems as well. If there is an amplifier in the line make sure it's getting power.
If you want to troubleshoot this yourself, please see Internet Troubleshooting Tips. If you still need help, please post your Internet plan speed and the following information from your gateway (from http://10.0.0.1):
If you can't find the problem or you'd rather have Comcast take care of it, call them at the phone number on your bill or 1-800-Comcast, or use one of the options on https://www.xfinity.com/support/contact-us/. It's not likely they can fix the problem remotely. If not, insist they send a tech out to identify the cause and correct it.
If the tech finds bad coax, splitters, amplifiers, or connections in your home (even if Comcast originally supplied them) you'll probably have to pay for the visit ($70-$100) unless you have their Service Protection Plan ( https://www.xfinity.com/support/articles/service-protection-plan, closed to customers that don't already have it). If the trouble is due to a faulty Comcast rental device or anything outside your home you shouldn't be charged.
Please be aware that there are 2 kinds of responses in this Forum: Replies and Comments. When you Comment on a post by scrolling down to "Comment on this post here...", I am notified of your response. But if you select Reply, I am NOT notified and may not be aware of your response.
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user_fccbfb
Visitor
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1 Message
3 years ago
In the last week my upload speed is down to zero too. Trying to figure this out. It’s disrupting my online classes.
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Greybase9
New Poster
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5 Messages
3 years ago
Terrible!! My Upload Speed was recently Cut In Half 😢 while Downloads are slightly faster ? What's happening Comcast ? Using the Ookla Speed Test App (Free online!) I have saved Results of my Xfinity Internet Connection - 5 years ago 100 Mbps Down/ 6 Mbps up. NOW ?? It's 470 Mbps down... and only 3 Mbps UP... and I've had Service Outages every week over the past month.
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EG
Expert
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118.3K Messages
3 years ago
@Greybase9
Please create a new topic of your own here on this board detailing your issue. Thanks.
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epaluszak
Visitor
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1 Message
3 years ago
yes. same. for me it is the same time everyday, for like a half hour, my upload will drop from 10mbps to 0.8mbps
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EG
Expert
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118.3K Messages
3 years ago
@Hightower71
Please create a new topic of your own here on this board detailing your issue. Thanks. The original poster has not returned. 6-month-old dead thread is now being closed.
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