Error: Failed to call SetDisplayConfig. [HR: 87]

[Null_Glow]

Getting this error message:
"An error has occurred while applying your new Monitor configuration.
Please check your settings and try again.
Error: Failed to call SetDisplayConfig. [HR: 87]"

I love this program, been using it for years but it's just started acting up on me.
The other day I updated my video drivers(Nvidia GTX 1070) to get a game to run right and now monitor profiles won't load correctly. Also I can't manually change monitors around in DisplayFusion either. If I go change my monitors around within the Nvidia control panel I can change them fine.

So, is Nvidia or Windows(10) not allowing DisplayFusion to change settings anymore or something like that?

Thanks for any help!

[Keith Lammers (Binary Fortress)]

Good question! We're currently working on some big improvements to the Monitor Configuration code for the next version of DisplayFusion. If you enable the "Check for new beta versions" option in the DisplayFusion Settings, you'll get notified when the next beta is available.

[Null_Glow]

Ok so this has gotten a little weird but I got a fix.
I noticed that now even through the Nvidia Control Panel my system wouldn't let my large display go into 4k@60hz anymore, it would only work in 4k@30hz. I looked for a solution for that and I found this on the Nvidia site:

>Navigate to Nvidia control panel by either right clicking on your desktop and selecting it, or in your notification drawer.

>Make sure Dynamic Super Resolution is OFF.

>Go to the resolutions section, under all of your resolutions, select 'Create Custom Resolution'.

>You should have all of the settings for 4k@30hz filled in already, if not, make sure you have 4k@30hz resolution applied before doing this.

>Change the Refresh rate to 60hz, dont press test yet as you'll get an error saying you already have this resolution.

>On the bottom part (Timing) of the section, change it from Automatic to Manual on the drop down list.

>Finally, the bottom right of the window should be refresh rate, change click the up arrow once to change it to: 60.0001 and click test.

The setting should automatically apply if it works, if not just select from the resolutions, it should be at the top.

This will STILL work with your monitor, giving you a new 4k@60hz resolution that works perfectly :)




The thing is, not only did that fix my 4k@60hz problem, now for whatever reason DisplayFusion is also back to full functionality. DisplayFusion will change resolutions now freely and monitor configurations are back to working now too.

I have no clue why this worked at all, but I thought I'd post it so maybe the devs can get some insight and maybe this will help someone else too.

Thanks!


(reference for the 4k fix: https://www.nvidia.com/en-us/geforce/forums/discover/283887/-solved-416-16-game-ready-can-no-longer-do-4k-60hz/)

[Keith Lammers (Binary Fortress)]

Wow, that's super strange! We did just release a new beta today with some monitor configuration fixes as well, so if you run into trouble again, please try updating to the beta and let us know how it works out.

Thanks!

[Seabass-Chan]

I just received this error today when I noticed a macro I had for swapping my monitor configuration between Mirroring to my TV/Extending a secondary display stopped working. As far as I can tell the only change I made was plugging/unplugging a VR headset but that has never been an issue before.

edit: Nevermind, managed to fix it by recreating the monitor profiles