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user_zg12kb
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Thursday, November 13th, 2025 5:42 PM

Unable to Upload Large Files — Uploads Randomly Fail

Hello,

I am consistently experiencing failed uploads when pushing Docker images(other upload usecases too) to GHCR from my Xfinity connection. The uploads start but terminate partway through with Broken pipe

This happens with both large and smaller pushes. The same operation succeeds instantly when tethered through a mobile hotspot or non-Xfinity network.

I have already tried the following without success:

  • Multiple systems (macOS and Linux)

  • Xfinity modems (including XB8)

  • Restarting modem/router

  • Flushing DNS and changing DNS to Google (8.8.8.8)

My trials suggest a possible upstream shaping or packet issue similar to what other users have documented here:
🔗 Large SCP transfers blocked (Xfinity Community)
🔗 Inability to upload any file (Xfinity Community)

Could a network engineer please verify:

  • Whether there is current traffic shaping or firewall policy affecting outbound SSH/HTTPS streams?

  • Whether my assigned IP range is subject to any upload restrictions?

  • Upstream signal levels or packet loss logs during sustained uploads?

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10 hours ago

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XfinityGabriel

Official Employee

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2.8K Messages

24 days ago

 

user_zg12kb, Hi there! Thanks for taking the time out of your day to reach out. I can certainly understand the inconvenience caused when those uploads fail as an internet subscriber myself. You've reached the right place. Over social media, we are a team of experts who specialize in resolving Internet service concerns over social media. Thanks for sharing the steps you have tried already and for sharing those links. Have you also checked for any reported interruptions using our interruption map like in this link here? Also, if you were to run an internet health test like in this link here via the Xfinity app, what results does it pull for you?

 

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user_zg12kb

Visitor

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4 Messages

Hi! Thanks for following up. I checked both the interruption map and ran the internet health test via the Xfinity app, and everything looks good on both.

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23 days ago

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XfinityJon

Official Employee

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827 Messages

Perfect, was there anything else that we could assist you with at this time?

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

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23 days ago

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user_zg12kb

Visitor

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4 Messages

Hi XfinityJon,

Thank you for the follow-up, but my issue is not resolved.

The "perfect" results from the health test and interruption map only confirm what I already knew: this isn't a simple outage.

My original problem remains exactly the same:

  • Problem: All large uploads (Docker images, etc.) are failing part-way through with a "Broken pipe" error.

  • Key Evidence: This only happens on my Xfinity connection. The exact same uploads work perfectly when I use a mobile hotspot or any other network.

The generic troubleshooting steps (like the health test) will not fix this. As I detailed in my original post, this strongly suggests an issue with Xfinity's upstream network, like traffic shaping, packet loss, or a firewall policy.

Please re-read my original questions. I need this escalated to a senior network technician or engineer who can actually investigate:

  1. If there is traffic shaping or a firewall policy affecting my outbound HTTPS/SSH streams.

  2. If my upstream signal levels and packet loss logs can be reviewed for errors during a sustained upload.

I have already done all the basic troubleshooting. I need technical support, not just a script. Can you please escalate this case?

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22 days ago

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XfinityJanelle

Official Employee

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1.9K Messages

We will be happy to take a look. Could you please send our team a direct message with your full name and full address? Our team can most definitely take a further look at this issue.To send a "Direct Message":
Click "Sign In" if necessary
• Click the "Direct Message chat" icon
• Click the "New message" (pencil and paper) icon
• Type "Xfinity Support" in the "To:" line and select "Xfinity Support" from the drop-down list which appears. The "Xfinity Support" graphic replaces the "To:" line
• Type your message in the text area near the bottom of the window
• Press Enter to send it

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

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Reply

22 days ago

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user_zg12kb

Visitor

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4 Messages

10 hours ago

Hi,

It has been months since I sent my details as requested above. I am not getting any help, and the standard support channels remain useless for this level of technical issue.

To be clear: My issue is still not resolved. I am still unable to push or complete large uploads, which makes it impossible for me to work.

I have provided all the necessary technical evidence to prove this is an upstream Xfinity network issue. At this point, if I cannot get this escalated to a network engineer who can actually fix the broken pipe/packet loss issue, I will be forced to switch providers. You are about to lose a customer.

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