This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Wannan tattunawa ta zama daɗaɗɗiya. Yi sabuwar tambaya idan ka na bukatar taimako.

Unable to access my Comcast email account through Firefos.

  • 1 amsa
  • 2 sa na da wannan matsala
  • 2 views
  • Amsa ta ƙarshe daga cor-el

more options

Have always gotten t my comcast email via the comcast sign in page till recently. I can still access it using other browsers (chrome). Now when I try to access it either through previously existing bookmark or by manually putting in address for inbox I get the following message:

The proxy server received an invalid response from an upstream server. The proxy server could not handle the request GET/appsuite/api/comcast/openid

Reason: corrupt status line returned by remote serverHTTP/0.9 400 Bad Request

Help,

Bill Casile 412-951-3377 wcasile@comcast.net

Have always gotten t my comcast email via the comcast sign in page till recently. I can still access it using other browsers (chrome). Now when I try to access it either through previously existing bookmark or by manually putting in address for inbox I get the following message: The proxy server received an invalid response from an upstream server. The proxy server could not handle the request GET/appsuite/api/comcast/openid Reason: corrupt status line returned by remote serverHTTP/0.9 400 Bad Request Help, Bill Casile 412-951-3377 wcasile@comcast.net

All Replies (1)

more options

You can try these steps in case of issues with web pages:

You can reload web page(s) and bypass the cache to refresh possibly outdated or corrupted files.

  • hold down the Shift key and left-click the Reload button
  • press "Ctrl + F5" or press "Ctrl + Shift + R" (Windows,Linux)
  • press "Command + Shift + R" (Mac)

Clear the cache and remove the cookies from websites that cause problems via the "3-bar" Firefox menu button (Options/Preferences).

"Clear the cache":

  • Firefox/Options/Preferences -> Advanced -> Network -> Cached Web Content: "Clear Now"

"Remove the cookies" from websites that cause problems.

  • Firefox/Options/Preferences -> Privacy -> "Use custom settings for history" -> Cookies: "Show Cookies"

Start Firefox in Safe Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration is causing the problem.

  • switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Appearance
  • do NOT click the "Refresh Firefox" button on the Safe Mode start window