I’ve been redoing the website that I maintain from v11 to v18 and I’m at the stage of pushing it to the server for development viewing and client sign off. First off, the server is Windows 2012, which is old and at EOL. I totally get that and I am prepared to swap this out for a new server if that…

Hi @IainMartin-Ayr Have you installed the .NET 10 hosting bundle for IIS on the server? [image] Download .NET 10.0 (Linux, macOS, and Windows) | .NET .NET 10.0 downloads for Linux, macOS, and Windows. .NET is a free, cross-platform, open-source developer platform for building many diff…

Yes, both the hosting bundle and the .NET SDK have been installed and are working as I have been able to create and run a new project on the server in the same directory - the project has since been deleted and it is reverted back to the uploaded files from my own machine. It seems similar issue to…

Hi @IainMartin-Ayr If only the import map entries 404 and the href assets load fine, I’d suspect the import map URLs are being generated with the wrong base path rather than IIS not serving the files. In the Network tab, compare the full request URL of a CSS file that works with one of the failing…

It is in a sub directory (C:\Websites\Development\AUBeta - but all my sites follow the same structure, so it’s not an application or virtual directory => [image] If I remove UmbracoApplicationURL from appsettings (rather than production.json) it errors with 500 and the message that the appUrl nee…

Hi @IainMartin-Ayr Ultimately, you are just updating from an earlier version of .NET core, so it should still work the same was from v11 to v18 in terms of IIS setup. Do you have any custom config in your project web.config that could be interfering? Did you clear out the v11 files completely bef…

Yeah, the directory was completely cleared out before uploading to the server, but it is possible that there is something way down in an obscure config file or setting that is making the site not behave. I’ve just got a brand new clean 2025 Windows Server VPS to try out to see if that makes any dif…

Hi @IainMartin-Ayr If a new Windows Server 2025 VPS is an option I would go down that route now - it’s easier now then migrating everything later, especially as Windows Server 2012 is out of support (and most likely the version of SQL Server you are using too). Let us know how you get on! Justin

It does help when setting the permissions on the folders and you’re looking for the user in IIS APPPOOL\ you realize the name you entered has TWO spaces in it and not the ONE that you’re entering in the security dialog box. It’s been a long day!

@justin-nevitech Looks like it’s working .. Using a different domain name as I currently don’t have access to the clubs domain control panel (I just haven’t logged in for ages and it has forgotten me). Installed with SQLLite instead of SQL Server and running a USync import from the development s…

[image] Umbraco cloud: Page returns 404 during deploy to live speech_balloonQuestions So those settings don’t work on live? Have you checked you’ve done all the steps for production runtime mode as per the docs? Are you also done this part: To compile your…

Deploying Umbraco V18 to Old Windows Server

Questions

mistyn8 (Mike Chambers) September 23, 2026, 11:04pm 11