It seems that when we update the page settings for a page, the URL for the page is removing the underscores and adding an additional .aspx to the end. Do you have any idea what could be causing this issue?

Beth,

Let's start with DNN. Which version are you using?

The new versions have the option for "advanced" URLs that have no extension and also try to remove special characters from page names when constructing URLs, mostly replacing them with dashes.

Is that what you are seeing?

There is some degree of choice with this. Some of it is in the Host page(s) UI. Look for URL Rewriting. If you want to take advantage of URLs without extensions, you have to make a modest edit to the installation's web.config file.

Joe,

We just upgraded to DNN 7.3.4 and the issue began occurring after that. The pages are created with the correct URLs (underscores between words and one .aspx), then they get reverted to have no spaces and a double .aspx if we edit the page settings after page creation.

Have you looked at the URL Provider settings in your web.config file? What are they?

Are you using any custom URL rewriting, or a module that rewrites URLs?