About DXDiag.org
Plain-English guides to the Windows DirectX Diagnostic Tool.
Why this site exists
Sooner or later, almost every PC gamer or Windows user gets the same message from a game studio, a forum or a support agent: "Please send us your DxDiag." The tool itself is built into Windows, but the report it produces is long, technical and easy to misread.
DXDiag.org explains that tool from start to finish: how to open it, what every tab and field means, how to save and share the report safely, and how to fix the DirectX problems it points to. We write for people who aren't IT professionals, and we skip the filler.
What we cover
- Opening DxDiag: every method, plus fixes for when it won't start
- Reading your specs: CPU, RAM, GPU, VRAM and feature levels
- Saving and sharing a DxDiag report without leaking identifying details
- Checking your DirectX version and what it really means for games
- Getting DirectX safely and fixing missing DLL errors
How we write and check our guides
- Tested on Windows 11 and 10. Steps are checked against current Windows builds. When Microsoft changes a menu or wording, we update the guide and the "last updated" date.
- Official sources first. Technical claims are checked against Microsoft Learn documentation and GPU vendor (NVIDIA, AMD, Intel) references, and we link to them.
- Honest images. Our screenshots and diagrams are made in-house. Some are recreations of Windows screens that use example hardware values; none are copied from other websites. Computer names and hardware IDs are always blurred or fictional.
- Safe downloads only. We never host Microsoft software or DLL files. Every download link goes to an official microsoft.com or hardware-vendor page.
- Corrections welcome. If something is wrong or out of date, tell us and we'll fix it.
Our Report Reader tool
The free DxDiag Report Reader reads your DxDiag.txt file and turns it into a short summary: key specs, driver age, DirectX feature level and a copyable text block for support tickets. It runs 100% in your browser. Your report is never uploaded to us or anyone else.
How the site is funded
DXDiag.org is free to use. We may show advertising to cover hosting and the time it takes to produce guides. Ads never appear inside step-by-step instructions, and advertisers have no say in what we write. See our Privacy Policy for how ads and cookies work.
Independent and unaffiliated
DXDiag.org is not affiliated with, endorsed by, or connected to Microsoft Corporation. DirectX, DxDiag and Windows are trademarks of Microsoft Corporation. We are an independent educational resource.
Get in touch
For corrections, suggestions or partnership enquiries, visit our Contact page or email hello@dxdiag.org.