# The File 'DfxInstall.dll' is not marked for installation

**URL:** <https://forum.fxsound.com/t/the-file-dfxinstall-dll-is-not-marked-for-installation/2369>\
**Category:** Get Help\
**Created:** [October 8, 2023, 2:03am UTC](https://forum.fxsound.com/t/the-file-dfxinstall-dll-is-not-marked-for-installation/2369 "2023-10-08T02:03:15Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![sankarshana](https://avatars.discourse-cdn.com/v4/letter/s/ecb155/32.png) [@sankarshana](https://forum.fxsound.com/u/sankarshana)\
**Post date:** [October 8, 2023, 2:03am UTC](https://forum.fxsound.com/t/the-file-dfxinstall-dll-is-not-marked-for-installation/2369/1 "2023-10-08T02:03:15Z")

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Hello,

I would be very thankful if someone could help me out here.

I am on Windows 11.

I had installed FxSound earlier (latest version 1.1.20.0). Later I uninstalled it using a 3rd party uninstaller software. The devices were still there in device manager so I uninstalled them manually. Also deleted some registry keys (I dont remember which ones).

Now my system seems free from FxSound. When I try to install an older version I get a message that a newer version is already installed and when I try to reinstall 1.1.20.0 I get the message “The File ‘DfxInstall.dll’ is not marked for installation.”

I searched my whole system for any files with the names fxsound etc and found none.

Please help with how to go ahead.

I tried extracting and then running the msi too.

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**Author:** ![sankarshana](https://avatars.discourse-cdn.com/v4/letter/s/ecb155/32.png) [@sankarshana](https://forum.fxsound.com/u/sankarshana)\
**Post date:** [October 8, 2023, 2:29am UTC](https://forum.fxsound.com/t/the-file-dfxinstall-dll-is-not-marked-for-installation/2369/2 "2023-10-08T02:29:11Z")

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I just wanted to inform that running the below troubleshooter from microsoft uninstalled it properly and I could successfully reinstall the latest version.

> **[Fix problems that block programs from being installed or removed - Microsoft...](https://support.microsoft.com/en-us/topic/fix-problems-that-block-programs-from-being-installed-or-removed-cca7d1b6-65a9-3d98-426b-e9f927e1eb4d)**
>
> The Program Install and Uninstall troubleshooter helps you automatically repair issues when you're blocked from installing or removing programs.

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**Author:** ![doolhoofd](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fxsound.com/doolhoofd/32/1131_2.png) [@doolhoofd](https://forum.fxsound.com/u/doolhoofd)\
**Post date:** [October 8, 2023, 9:07am UTC](https://forum.fxsound.com/t/the-file-dfxinstall-dll-is-not-marked-for-installation/2369/3 "2023-10-08T09:07:47Z")

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Good afternoon,  
Apologies for my late response; I was, quite simply, asleep.  
Good to hear you managed to fix the issue on your own, thanks for letting us know.

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**Author:** ![sankarshana](https://avatars.discourse-cdn.com/v4/letter/s/ecb155/32.png) [@sankarshana](https://forum.fxsound.com/u/sankarshana)\
**Post date:** [October 8, 2023, 4:13pm UTC](https://forum.fxsound.com/t/the-file-dfxinstall-dll-is-not-marked-for-installation/2369/4 "2023-10-08T16:13:28Z")

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Good evening, thanks a lot.