We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

Avatar for Username

Sykje yn Support

Mij stipescams. Wy sille jo nea freegje in telefoannûmer te beljen, der in sms nei ta te stjoeren of persoanlike gegevens te dielen. Meld fertochte aktiviteit mei de opsje ‘Misbrûk melde’.

Mear ynfo

Dizze konversaasje is argivearre. Stel in nije fraach as jo help nedich hawwe.

Why won't Firefox 12.0 won't open/load .aspx pages?

KKissel
KKissel
more options

When I am on ancestry.com and researching various genealogy family members. If I right click an ancestor and do "open in new window," instead of opening in Firefox 12.0 (which is set as my default browser) it opens in IE. If I click on the properties of the item(s) I'm opening to see what they are, they say they are ASPX files. Obviously the URL can be opened in Firefox after it's been opened in IE, but not directly with a right-click from Ancestry.com. Why is that? (Note, you may need to be a ancestry.com member to see the info displayed within this URL.)

When I am on ancestry.com and researching various genealogy family members. If I right click an ancestor and do "open in new window," instead of opening in Firefox 12.0 (which is set as my default browser) it opens in IE. If I click on the properties of the item(s) I'm opening to see what they are, they say they are ASPX files. Obviously the URL can be opened in Firefox after it's been opened in IE, but not directly with a right-click from Ancestry.com. Why is that? (Note, you may need to be a ancestry.com member to see the info displayed within this URL.)

Alle antwurden (1)

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 10 Contributor
more options

If you use the add-on IE Tab or one of its derivatives, can you check whether there is an option that controls this?

If you just left-click or if you Ctrl+click (open in new tab), do those work normally or do those also launch an IE window?

The .aspx extension can be used to delivery ordinary web pages, PDFs, or any other kind of file. Firefox generally looks at the content-type sent by the server. Firefox compares the content-type with the list of application handlers to determine how to open it.

The content-type is invisible in ordinary browsing. You can view it using an add-on, or perhaps more quickly if you use Rex Swain's HTTP viewer tool. After you a logged in to Ancestry, paste the URL into the form on http://www.rexswain.com/httpview.html and click the bubble for HEAD then click Submit. On the results page, if you scroll down a bit to the "Receiving Header" section, what Content-Type is listed there?

With that information, we may be able to find a problem entry here:

orange Firefox button or classic Tools menu > Options > Applications