guido542350's profile

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14 Messages

Saturday, May 23rd, 2026 5:59 PM

2gb Internet

Noticed huge drop in internet speed, from about 900mbps to 80mbps.  Rebooted everything, same thing.  Looked at my Motorola MB8611 event log after reboot, found these 2 errors:

Time Not Established   Critical (3)   SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
Time Not Established   Critical (3)   UCD invalid or channel unusable

I also found out that even though I supposedly have the 2gb plan, according to my bill since February 2026, Xfinity thinks I only deserve 100mbps.  It's been like that since March; behold:

I mean, REALLY?

I definitely need some help with this.

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Expert

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118.1K Messages

1 hour ago

Concern moved here to the Customer Service help section for greater exposure to Comcast corporate employees (The Digital Care Team) for assistance.

Official Employee

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3K Messages

54 minutes ago

 

guido542350 Hi there! Thank you so much for using our Forums and for taing the time to write us about your connection issues. We are here to help you and turn this around, so you have the best experience. Please send us a DM with your name and address to get started. 
To send a "direct message" / "private message" message to Xfinity Support:
 • Click "Sign In" if necessary
 • Click the "Direct Message" icon
 • Click the "New message" (pencil and paper) icon
 • The "To:" line prompts you to "Type the name of a person". Instead, type "Xfinity Support" there
 • As you are typing a drop-down list appears. Select "Xfinity Support" from that list
 • An "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

 

New Poster

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14 Messages

@XfinityJorge​ Well, when I click on the DM icon, the page opens, but all I get is a spinning circle...can't do anything.  I waited at least 3 minutes, but nothing happened.

Official Employee

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3K Messages

Oh no, can you try clearing your cookies and cache to see if that helps. We are here ready to help you. 

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

New Poster

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14 Messages

@XfinityJorge​ Found that ad blocker was messing with it

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