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Can't establish connection with Xfinity server.

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A recent Windows update on my Dell laptop resulted in an unusable copy of Windows(thanks Microsoft). After much time and effort, Microsoft's only solution was to do a fresh install of Windows which we did. Of course all software and apps had to be reinstalled. I have used Thunderbird on this laptop for years successfully. I downloaded the most current verision of Thunderbird and installed it. I then attempted to add my email account. I entered my name, email account name, and password. Message came back, "Configuration found in Mozilla ISP database." Configuration shows Incoming: IMAP, SSL/TLS. Outgoing: SMTP, SSL/TLS. I then clicked on the "Done" box. Next an Xfinity window opens with my username. The next box says "Let's go". I clicked that box. A window pops open that says, "ACCESS DENIED, You don't have access "http://login.xfinity.com/login" on this server. I googled that line and found many responses. I tried many of the solutions shown to no avail. I then contacted Comcast/Xfinity. After hours on the phone and finally reaching Comcast Assurance Level 2, the agent and I tried various things and still to no avail. So, here I am. Anyone there have any ideas on how to proceed. Thanks to anyone who tries.

A recent Windows update on my Dell laptop resulted in an unusable copy of Windows(thanks Microsoft). After much time and effort, Microsoft's only solution was to do a fresh install of Windows which we did. Of course all software and apps had to be reinstalled. I have used Thunderbird on this laptop for years successfully. I downloaded the most current verision of Thunderbird and installed it. I then attempted to add my email account. I entered my name, email account name, and password. Message came back, "Configuration found in Mozilla ISP database." Configuration shows Incoming: IMAP, SSL/TLS. Outgoing: SMTP, SSL/TLS. I then clicked on the "Done" box. Next an Xfinity window opens with my username. The next box says "Let's go". I clicked that box. A window pops open that says, "ACCESS DENIED, You don't have access "http://login.xfinity.com/login" on this server. I googled that line and found many responses. I tried many of the solutions shown to no avail. I then contacted Comcast/Xfinity. After hours on the phone and finally reaching Comcast Assurance Level 2, the agent and I tried various things and still to no avail. So, here I am. Anyone there have any ideas on how to proceed. Thanks to anyone who tries.

All Replies (6)

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I saw a similar post that may be useful:

 https://support.mozilla.org/en-US/questions/1437228

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It appeared that this was the exact situation that I have. I also spent much time on the phone with Comcast to no avail. I tried the solution(s) suggested in the post you sent but was unsuccessful.

I was able to duplicate the IN and OUT server settings from my desktop to the laptop that is having the problem. Desktop uses the POP instead of IMAP account. With those settings I can receive mail but sending mail returns the same error message that I started with "ACCESS DENIED. You don't have permission to access this server."

Thanks for sending though

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I've used Thunderbird for years. Now same issue here. New laptop, and new install of Thunderbird. I can not open Thunderbird (get it to display on my screen). The message is below. I'm new to Eset internet security and using Eset. I shut it off to no avail. I'm currently using and relying on Xfinity online email. Works fine but not my first choice.

Endret av Jim Bailey

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That is the same message I get. I did talk to Comcast/Xfinity, their Security Assurance Level 2. They did say that they are aware of this problem and are working on it. They asked that I try again in an hour or two or the next day. I did both but the problem and "Access Denied" message appears and continues to appear today. I find that these kinds of problems are happening more regularly and not just with Comcast. Just my opinion but I think there is a general decline in systems integrity and quality. Anyway I will check back with them. Don't really expect much but if any positive developments I will pass that on here.

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It sounds like a frustrating situation! Since you've already tried several solutions, one thing that might help is disabling any VPN, proxy, or firewall temporarily to see if they're blocking the login. Additionally, clearing your browser cache or using a different browser for the Xfinity login might help. If Thunderbird is still giving trouble, you could try manually entering the server settings for Xfinity email rather than relying on the automatic configuration. Hopefully, this helps!

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Have already tried thoses, but thanks for trying.

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