DisplayFusion RSS: Getting an error that seemed to have come out of no where. Error: Failed to call SetDisplayConfig. [HR: 31] https://www.displayfusion.com/Discussions/RSS/?TopicID=1a7fb79e-3a98-4518-9e65-181b172d54b5 DisplayFusion RSS: Getting an error that seemed to have come out of no where. Error: Failed to call SetDisplayConfig. [HR: 31] Sun, 19 Apr 2026 19:35:05 GMT en hourly 1 https://www.displayfusion.com/Discussions/RSS/?TopicID=1a7fb79e-3a98-4518-9e65-181b172d54b5 RE: Getting an error that seemed to have come out of no where. Error: Failed to call SetDisplayConfig. [HR: 31] https://www.displayfusion.com/Discussions/View/getting-an-error-that-seemed-to-have-come-out-of-no-where-error-failed-to-call-setdisplayconfig-hr-31/?ID=1a7fb79e-3a98-4518-9e65-181b172d54b5#3 Tue, 02 Mar 2021 18:41:19 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/getting-an-error-that-seemed-to-have-come-out-of-no-where-error-failed-to-call-setdisplayconfig-hr-31/?ID=1a7fb79e-3a98-4518-9e65-181b172d54b5#3 DisplayFusion Hi Matt,

Glad to hear you got it working, and thanks for posting your solution! ]]> RE: Getting an error that seemed to have come out of no where. Error: Failed to call SetDisplayConfig. [HR: 31] https://www.displayfusion.com/Discussions/View/getting-an-error-that-seemed-to-have-come-out-of-no-where-error-failed-to-call-setdisplayconfig-hr-31/?ID=1a7fb79e-3a98-4518-9e65-181b172d54b5#2 Sat, 27 Feb 2021 04:00:55 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/getting-an-error-that-seemed-to-have-come-out-of-no-where-error-failed-to-call-setdisplayconfig-hr-31/?ID=1a7fb79e-3a98-4518-9e65-181b172d54b5#2 DisplayFusion I discovered the cause and was able to fix it.
Having checked the log I noticed the following error.

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2021/02/26 22:42:04.6388##_##WARN:L2##_##displayfusion.exe:16464##_##DFMonitorProfiles:SetMonitorSplitsToMonitors:663##_##-##_##Failed to find split monitor: X=0, Y=0, W=3440, H=1440##_##-


I had a light bulb moment. I installed a new cable the day this issue started

My GPU has 4 display ports. I installed the new cable into a different port not thinking much of it or that it would affect Display Fusion.

Apparently it does. Because the moment I switched my display port configeration to what I had initially appears to have resolved the issue.

This fix may not work for everyone who gets the error, but worth a shot. ]]> Getting an error that seemed to have come out of no where. Error: Failed to call SetDisplayConfig. [HR: 31] https://www.displayfusion.com/Discussions/View/getting-an-error-that-seemed-to-have-come-out-of-no-where-error-failed-to-call-setdisplayconfig-hr-31/?ID=1a7fb79e-3a98-4518-9e65-181b172d54b5 Sat, 27 Feb 2021 01:36:18 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/getting-an-error-that-seemed-to-have-come-out-of-no-where-error-failed-to-call-setdisplayconfig-hr-31/?ID=1a7fb79e-3a98-4518-9e65-181b172d54b5 DisplayFusion As far as I am aware there has not been any updates. Earlier today I had no issues, but this evening after turning on my computer I cannot switch to any of my saved my monitor configuration profiles.

I am getting the following error.

An error has occurred while applying your new Monitor configuration.
Please check your settings and try again.
Error: Failed to call SetDisplayConfig. [HR: 31]
[System.Exception] ]]>