If you enable the "Search All Content" option for the site and then perform a search, you are presented with product results and a link in the upper-right corner of the search results page to Search Articles. When you click on that link, it returns a list of webpages containing your search term. However, all of the links are broken. Instead of using the friendly URL, they all point to something like /Webpage/Index/4?CategoryId=3 which, for whatever reason, cannot be found.

9.0.4

Can you confirm from the admin Edit Content Page for the pages that you are getting invalid navigate URLs?
You need to confirm that the issue is only with Search Articles page or do we have invalid Urls stored in the database..

After the upgrade, the URLs should be regenerated using the category structure.

After further review, the friendly Page URLs were not automatically created for Content Pages during the install when updating from AC 7.0.7 to a clean install of AC 9.0.4. There were no errors or info messages during install. Friendly URLs were properly generated for products and categories, so I suspect this to be a bug or deficiency in the upgrade process.

The "Page Not Found" for content page search results was a red herring. When I did a preview of an existing content page from the admin, the URLs formatted like /Webpage/Index/4?CategoryId=3 resolved properly. Turns out that the WebpageController.SearchResults method is creating an absolute URL for the results. The method used for that relies on the Store URL which was set to http instead of https in my installation for some reason. Since I'm using Visual Studio's embedded server, it has two separate ports that have to be used when switching between HTTP protocols. It was trying to connect via http to the https port which resulted in an error. I was able to resolve that error by updating the Store URL in the System Settings.

Is there a way for us to retroactively auto-generate Page URLs for Content Pages? On the current site there are almost 100 content pages. On our largest website, there are hundreds of them. Would be a ton of work to go into every page and do it manually.

It would be very painful for us to manually go back and create URLs for all of the webpages, so we went into the CommerceBuilder source, copied the method to create URLs for Products, and updated it to create them for Webpages. We literally took the GenerateProductUrls method and performed replacements "Product" => "Webpage" and "product" => "webpage", and added a simple if/continue check to ignore system generated pages.

It generated friendly URLS, however, it didn't take category path into account like it does for products. It just generated a URL for the root of the website. Any thoughts on how to generate the webpage urls so that they contain the parent category/categories?