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I'm using Firefox 10.0.1 with no add-ons or extensions. A few months ago (possibly with a Firefox update?) the markers (the upside down teardrop shaped ones) stopped appearing in Google Maps. I can see that the image "tries" to load there (I see a little square, possibly with the "broken image" icon, flash where it should be), but the markers don't load. I can see the bubble, but no marker.

I've attached an image where you can see the bubble but no marker.

This makes viewing multiple locations on the same map basically useless. Unfortunately I can't test other browsers since this is all I can use at work.

Why aren't these markers showing up and what can I do to fix it?enter image description here

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in that case. It is a permanent problem with how Google maps server sends these marker images(Response Headers) and the way Firefox interprets the requests. See this issue support.mozilla.org/en-US/questions/900503 –  Deeptechtons Jun 13 '12 at 4:16

3 Answers 3

up vote 3 down vote accepted
+50

There is a known bug with loading the marker images when you are behind a proxy - I suffer from the same problem. There is a thread on the issue on the Mozilla support pages here, something to do with Firefox not sending the proxy authentication information with the request. There is a Bugzilla issue open for it (now marked a duplicate of another issue) - it alleges that the issue should be fixed in Firefox version 13 (I can't install it to test unfortunately).

Alternatively, Galious in the Mozilla support forum suggests using the Proxy Authentication add-on to solve the problem in the mean time.

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Thank you! The add-on worked perfectly and my markers are back (I can't install version 13 either). Everyone had useful answers but I'm accepting this one (and awarding the bounty) because your suggestion about the add-on fixed the problem. –  Jer Jun 15 '12 at 13:38

There are options to set your own marker graphics, you can try that to make sure it's really not showing up. Try in Chrome and IE as well

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Can you tell me how to do that? I don't see any settings for Google Maps (there's no "gear" icon in the upper right like there is in Gmail, for example). Also unfortunately I can't use Chrome or IE at work. –  Jer Jun 12 '12 at 15:20
    

I've no problem with Firefox 13.0 on Mac.

When you click on a marker a new marker image loads and the marker image displayed before you click on it transforms to newly loaded and bigger marker image.

The problem may be Firefox couldn't load bigger marker image from its source. You can inspect this from console that could be accessed from Tools > Web Developer > Web Console.

If you see a line like this includes 200 OK message, may try to update Firefox.

Else if you see it tries to load bigger marker images but response status aren't 200, may try to inspect your network.

Could you give some info about application or code snippets to reproduce this problem.

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I don't know what you mean by the application or code snippets - I'm just trying to use the Google Maps web site. In any case, I turned on Web Console and I get tons of lines. There are 3 common ones (407 Proxy Authentication Required, 200 OK, and 204 No Content). I'll post these in another comment since there's not enough room in this one. –  Jer Jun 12 '12 at 15:17
    
[11:12:02.072] GET maps.gstatic.com/intl/en_us/mapfiles/markers2/… [HTTP/1.1 407 Proxy Authentication Required 5ms] [11:12:02.895] GET lh3.googleusercontent.com/-7MlW86GJH-Y/T6_f5_C0i3I/AAAAAAAAADE/… [HTTP/1.1 200 OK 19ms] [11:12:03.038] GET maps.google.com/maps/… [HTTP/1.1 204 No Content 78ms] –  Jer Jun 12 '12 at 15:17
    
Finally, I think Firefox is up to date? When I go to About and click Check For Updates, it says Firefox is up to date. –  Jer Jun 12 '12 at 15:18
    
In the first one you've posted, a 407 message, your browser can't access the marker image because of your proxy you or your network have been using. Are you using any proxy? –  ahmet Jun 12 '12 at 18:41
    
We do have a proxy here at work. I can't imagine why it wouldn't allow us to load those markers, but I guess that is the problem... –  Jer Jun 12 '12 at 20:25

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