Is your website running software that is out of support?
Enter a website address. We fetch one page the way a browser does and tell you what the response reveals about the software behind it, with the date each part stops receiving security fixes. It takes a few seconds and there is nothing to install.
Result
| Component | Found | Security fixes | Status |
|---|
What a result looks like
An example for an imaginary site, with each status worked out as of 3 October 2026.
| Component | Found | Security fixes | Status |
|---|---|---|---|
| Web server | IIS 8.5 on Windows Server 2012 R2 | 10 October 2023 | Support ended |
| jQuery | jQuery 1.12.4 | No longer supported | Support ended |
| Bootstrap | Bootstrap 3.3 | 24 July 2019 | Support ended |
| .NET Framework | ASP.NET on .NET Framework 4.x (CLR 4.0.30319) | Depends on the release | Not pinned down |
| Web framework | ASP.NET Web Forms | None announced | Supported |
The pattern in the example is a common one: a site that still works, on a server whose security fixes stopped years ago, with a front end that nobody has touched since it was built.
What it reads
- Response headers
- Server (IIS, Apache, nginx), X-Powered-By (PHP, ASP.NET), X-AspNet-Version, X-AspNetMvc-Version and X-Generator.
- The page itself
- The generator meta tag, the addresses of scripts and stylesheets (where jQuery, Bootstrap, AngularJS and Vue carry their version), ASP.NET view state, and page addresses ending in .asp or .aspx.
- Our end-of-support dates
- Each thing recognised is matched to the vendor dates on this site, so the status is the same one the end-of-support pages show.
What it cannot see
- Anything the server keeps quiet
- Many servers are set not to name their software. A site with no findings has not passed; it has told us nothing.
- Which Windows is behind IIS 10
- IIS 10 ships with Windows Server 2016, 2019, 2022 and 2025, so the Windows version cannot be told from the page. Older IIS versions do identify their Windows.
- The exact .NET Framework release
- ASP.NET reports the runtime version, which every release from 4.0 to 4.8.1 shares. Our free server script reads the installed release.
- Databases, back-office systems, anything behind a login
- The check sees one public page. SQL Server, Access, internal applications and whatever runs after sign-in are out of its sight.
What the statuses mean
- Support ended
- The vendor stopped issuing security fixes for this version on the date shown. It still works; it is no longer patched.
- Ending within a year
- Security fixes stop within the next twelve months. Time to plan the move.
- Supported
- Still receiving security fixes. Where a date is shown, that is when they stop.
- Not pinned down
- The page shows the product but not enough to say which release, so the date depends on something only the server can tell you.
- For information
- Seen on the page, but with no vendor support date to compare against.
Checking the server itself
This check sees only what a public page reveals. For the server behind it, our free end-of-support check script lists the exact versions of Windows, SQL Server, .NET and Office installed, with the same dates. It runs on the machine and sends nothing anywhere.
Anything marked out of support has a page on this site explaining what stopped and what the options are. Start with the end-of-support dates.
Found something out of support?
Tell us which version, what depends on it and how it is hosted. We will set out the upgrade route and what it is likely to involve.