Routing issue in Umbraco 17

[angelrishi (Angelo)]

Upgraded the site from Umbraco 13 to Umbraco 17. It broke the routing. Even though the cultures for the url are defined, still it says 404 page not found. The backend has templates, url, etc.
The log file says:

{“@t”:“2025-11-25T13:48:14.6520960Z”,“@mt”:“No physical template file was found for template {Template}”,“@l”:“Warning”,“@tr”:“1a1b0495d36672dc6276ff4727a0bde5”,“@sp”:“f107fd1039363123”,“Template”:“HomePage”,“SourceContext”:“Umbraco.Cms.Web.Common.Controllers.RenderController”,“ActionId”:“73690651-ff58-4fdb-9245-b3f89f78a782”,“ActionName”:“Umbraco.Cms.Web.Common.Controllers.RenderController.Index (Umbraco.Web.Common)”,“RequestId”:“400000cb-0002-f800-b63f-84710c7967bb”,“RequestPath”:“/”,“ProcessId”:26124,“ProcessName”:“iisexpress”,“ThreadId”:7,“ApplicationId”:“d9920e7e594a3a6962c5903b1de02c65b8e4160d”,“MachineName”:“xxxxxx”,“Log4NetLevel”:"WARN ",“HttpRequestId”:“38c5b2e9-fdb8-4e0b-8ad8-23e7ea5aaaad”,“HttpRequestNumber”:12,“HttpSessionId”:“7f74d48f-c5b8-b98d-6a68-b8fd730972cb”}

[sebastiaan (Sebastiaan Janssen ⚓)]

The routing is fine, there’s just some upgrade instructions you need to apply, also see this topic:

Upgrading to v17-rc2; No physical template file was found for template

It is likely related to this breaking change: If you use InMemoryAuto models builder, or rely on Razor runtime compilation for editing templates via the backoffice, you need to reference the Umbraco.Cms.DevelopmentMode.Backoffice package. If using models builder with one of the source code modes (that is, not InMemoryAuto), you do not need to reference the Umbraco.Cms.DevelopmentMode.Backoffice package. However, ensure the following settings are removed from your .csproj file: <RazorCompileO…

[angelrishi (Angelo)]

Thanks <3.
The only thing that fixed for me was to reference:

Umbraco.Cms.DevelopmentMode.Backoffice

I am using SourceCodeManual. Removing the following created problems as tons of compilation errors came, so revered them back.

<RazorCompileOnBuild>false</RazorCompileOnBuild>
<RazorCompileOnPublish>false</RazorCompileOnPublish>

installing Umbraco.Cms.DevelopmentMode.Backoffice was the fix <3

Thank you

[angelrishi (Angelo)]

NEW ISSUE:

after doing this, now all the nodes are showing “*This document is published but its URL cannot be routed”.
*
I have defined culture and hostnames, but they do not reflect.
Only the home page is loading.

Could you guide?

[sebastiaan (Sebastiaan Janssen ⚓)]

@angelrishi

This document is published but its URL cannot be routed

No idea about this one, I would start with Reloading and / or rebuilding the cache (Settings > Published Status).

[angelrishi (Angelo)]

I fixed the problem by installing Umbraco MCP and then using AI Agent to republish all the nodes. Once all the nodes were republished, the correct links reappeared