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My office/dev PC is a triple monitor machine running Windows 2008R2. I occasionally remote desktop to this machine from home, using a single monitor. After I do that, the "Main Display" reverts to the leftmost of the three monitors, and I need to reconfigure my monitor settings when I get back to the office.

I do have DisplayFusion installed for menu bars on all screens, and haven't tried to disable that to see if that's the culprit.

But I have switched the video ports driving the leftmost and center monitor, thinking that maybe my machine was just reverting to a default video out as the main display. That didn't help.

Anyone else seen this? Any ideas on how to get the "Main display" to stay set to my center monitor?

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I think this is a bug that was fixed in a QFE package or maybe in 2012(R2). I can't confirm, though. – cdavid Feb 7 '14 at 8:50
up vote 0 down vote accepted

Turns out the key to this was that the confgi is also lost during a restart, which let me find the hotfix at Microsoft that fixes this.

All is good after installing the hotfix referenced at:

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