#38205 (Bug) https://hub.displaycal.net/issue/35661/
I have had the exact same issue as the person that posted this (https://hub.displaycal.net/issue/35661/?unapproved=1093&moderation-hash=fb75c00e5d12fde7effaeb79e3fb2062#comment-1093) ~6 months ago
Hello everyone, i was looking for forum on this page and try lot of advices you wrote here, but DisplayCAL cant work with Calibrite ColoChecker Display Pro on my pc. It always show !Instrument access failed”.
I **believe** I solved it by restarting the PC by following the instructions here (https://www.argyllcms.com/doc/Installing_MSWindows.html#WIN8) whilst attempting “To install the Argyll Driver”
However, it took me ages to figure this out and even now I’m not sure how I managed this entirely.
I believe changes may be required to improve compatibility with the “Calibrite ColorChecker Display Pro”
logs (application/zip | 2022-12-28 18:39:24)