D3D11.Dll Error Resolution (Windows 10/8.1/7) September 30, 2015October 23, 2018 Vikas Windows An error appears on your screen while you are trying to open an application: “This application has failed to start because D3D11.DLL was not found. Re-installing the application may fix this problem.” Step 1 D3D11.Dll Error? Download Windows Cleaner ST Cleaner Download (w/ Verisign Digital Certificate). Compatible w/ Windows 10/ 8.1/ 8/ 7/ Vista/ XP. Reinstall DirectX This is an API used for gaming and some web pages. When its files are corrupted, it fails to handle game programming and multimedia tasks. Download link: https://www.microsoft.com/en-in/download Download Missing File If, for some reason, a required DLL file is missing/not found. Downloading application specific files can help. Restore the File File sharing provides smooth access to distributed digital media components. D3D11.dll error occurs due to failure to load required objects/modules. Restore the file from the ‘Recycle Bin’. Run SFC SFC validates Windows system files for damages. You can troubleshoot this error with the help of this utility. Restore the System Return your system files and configurations to an earlier point without affecting personal documents and stored items. Rollback your machine to a point when it was working properly. Disable Startups Identify the startup items which are causing the conflicts. Disabling your Antivirus can expose your PC to potential risk, so only unregister the startup items which are not affiliated with security software. Scan PC with Antivirus Get a free virus scanner and check your PC for viruses or malware. Security experts identified that some infected PCs were showing the D3D11.dll error. Update Drivers & System Components Outdated device drivers can cause a lot of problems and often show error messages. Keep your devices up-to-date with the latest updates.