Background – on quirks and compatibility The .NET Framework (including ASP.NET) strives to maintain near-100% compatibility when an existing framework is updated on a machine. We try to ensure as much as possible that if an application was developed and deployed against .NET Framework 4, it will just continue to work on 4.5. This normally means keeping quirky, buggy, or undesirable behaviors in th
![All about - .NET Blog](https://cdn-ak-scissors.b.st-hatena.com/image/square/210b0eae158a4966224b39383ba61776b611bce1/height=288;version=1;width=512/https%3A%2F%2Fdevblogs.microsoft.com%2Fdotnet%2Fwp-content%2Fuploads%2Fsites%2F10%2F2019%2F02%2Fswimlane-cross-platform.png)