The Mixed Reality Forums here are no longer being used or maintained.
There are a few other places we would like to direct you to for support, both from Microsoft and from the community.
The first way we want to connect with you is our mixed reality developer program, which you can sign up for at https://aka.ms/IWantMR.
For technical questions, please use Stack Overflow, and tag your questions using either hololens or windows-mixed-reality.
If you want to join in discussions, please do so in the HoloDevelopers Slack, which you can join by going to https://aka.ms/holodevelopers, or in our Microsoft Tech Communities forums at https://techcommunity.microsoft.com/t5/mixed-reality/ct-p/MicrosoftMixedReality.
And always feel free to hit us up on Twitter @MxdRealityDev.
Architecture, Rock Climbing and HoloLens
Just wanted to share, and hopefully inspire related projects, a professional application of the HoloLens by an architecture/engineering firm. I wrote about it on my blog: https://bimchapters.blogspot.com/2017/08/microsoft-hololens-in-architecture-case.html
We used the HoloLens app by Trimble, called "SketchUp Viewer for holoLens".