Firewall issues caused by Comcast internet provider

People are not able to access the website if their internet provide is comcast. They are getting a firewall access error. IF they use Google Chrome INCOGNITO mode - all works okay. Otherwise not.

The fact that the website loads okay on incognito version of the browser and not on the regular version suggests that it’s not an ISP (Comcast) issue.

Since you mentioned that incognito version is working okay, is that for one of your visitors or for multiple visitors? Assuming it’s the latter, do you know if these common visitors have a common browser extension that could be causing the blockage?

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