> For the complete documentation index, see [llms.txt](https://knowledge.illumina.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://knowledge.illumina.com/instrumentation/general/instrumentation-general-reference_material-list/000007801.md).

# How to check .NET version on Windows instruments

To check the .NET Framework version on instruments running Windows Operating Systems, follow the steps below.

1. First, open the windows file explorer and navigate to C:\Windows\Microsoft.NET\Framework. There will be a few folders with "V.x"
2. Open the folder with the highest version (V).
3. Within this folder, right click any of the .dll files and select Properties.
4. Select Details tab; the .NET framework version can be found under File version.

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| *For any feedback or questions regarding this article (Illumina Knowledge Article #7801), contact Illumina Technical Support* [*techsupport@illumina.com*](mailto:techsupport@illumina.com?subject=Question%2FFeedback%20Regarding%20Illumina%20Knowledge%20Article%20#000007801%20-%20Instrumentation%20\&body=Dear%20Illumina%20Technical%20Support,%0D%0A%0D%0A)*.* |


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