After an upgrade to Lightroom Classic CC, Lightroom failed to open. This error message was received: Lightroom classic CC|CRCclient.dll is either not designed to run on windows or contains an error.... Error status 0xc0000020.
Hi Pete, I’m using Win10. I updated LR from the CC control panel and when I clicked on the icon, I got the error message as in Fred’s post. I uninstalled LR Classic CC and tried again, same thing. I have now installed LR 2015CC and this is ok. A reboot of Windows did not have any effect.
I have fixed my problem. It turned out that Mcafee was somehow inferring with those dll files mentioned in the error messages. I paused Mcafee, deleted Lightroom, and then reinstalled it. It was up and working without any problems. I went to Mcafee's exceptions page and entered all the dll files that were showing up in the error messages as trusted files so that the Mcafee software would ignore them. It solved my problem.
I just started seeing this error. I have Lightroom Classic CC running on Windows 10 Version 1709. I have been starting Photoshop from Lightroom on this version of Windows for about a week. For example, earlier today I used Lightroom to edit several raw photos. I exported them as jpg from Photoshop. Tonight I copied two new raw photos to my harddrive using File Explorer. I edited the two photos and exported them as png from Lightroom Classic CC. I then decided I wanted to edit the raw photos in PSE. I to start Photoshop CC 2018 from Lightroom. I got the error message described in this thread. I restarted the PC and tried again. Same error. I have not tried the suggestion about McAfee. I will try it tomorrow. It doesn't make sense that McAfee would get in the way of this dll when it has allowed it previously. But then this error suddenly showing up doesn't make sense.
I have had nothing but problems with LR and PS since the upgrade. First, it was PS that would not open. I would get error messages every time. I got onto Adobe help and they remotely took over my computer. Did the disable McAfee uninstall, reinstall all programs thing. This worked for a little while. Then, the only way I could access PS was directly from LR. Then I couldn't get on LR without the same error message shown above. Back to Adobe Help, who again remotely took over my computer. This person found that the Microsoft Visual C++ files were corrupt. After 90 minutes, everything was fixed again. Until the other day, when again I got the error message trying to open LR. Having watched the last remote take over, and repair I kinda knew what to do. So I fixed the Microsoft Visual C++ files...again, uninstalled and reinstalled LR and so far it's still working. Hopefully somebody, somewhere fixes this bug.
I had the same problem. I uninstalled and reinstalled several times. After each reinstall except the last one, Lightroom Classic ran. After the last uninstall, I have not been able to reinstall, and get a Code 146 Error. I have uninstalled and reinstalled Adobe Creative Cloud Application, have tried to install Lightroom Classic from Adobe.com directly, and have tried the work around for Error Code 146 without success. I am now dead in the water, and have work to do. Maybe I should reinstall my credit card authorization and let Adobe figure out how to get paid.