Error 208

[Chef Gusteau]

i need help from anyone, i tried pluging in the vr plug ( the one in the link box) and i work i played one game, got off, but when i launched steamvr i gave me the error again. I did the same thing and it didnt work. Ive tried everything (at least i think) please help!!!!

[priestess of slaanesh]

common fixes

1) try reinstalling steamVR

2) try running it as admin

3) try restarting computer/steam

4) try running steam as admin

5) try disconnecting all cables from the link box, waiting a bit, and then plugging them back in again

whenever i have this error, i've found that trying methods 1 to 5, in random order and repeatedly, eventually makes the vive function again

[roamiii]

I am having the same Error (208) issue in ViveVR Wireless. I also have finally noticed that Windows 10 Settings - Blue tooth & other devices - reports "HMDA" (driver is unavailable).
Does this mean that the driver for the Headset Display is actually missing? If so, where can I l download this driver? It would seem that updating / reinstalling Steam does no good.
The VR system works fine while wired, but in wireless mode, it consistently produces the Error 208.
I've been over and over troubleshooting efforts with both Dell and HTC with the final recommendation that I return the unit.
Note that this issue is present in Win 10 v. 1809; Build 17763.316. Other OS builds don't appear to be affected. While this OS is digitallly Activated as Win 10 pro, I am also unable to prevent Automatic Updates from eventually resetting my NEW XPS computer and OS back to Win 10 Home (same build).
Any help from Vive, Steam, HTC...? would be GREATLY appreciated!