Visual studio cannot find references to dlls from custom assembly definitions

Questions & Answers
1

Hi,

I updated my project from 2019.3.7f1 to 2019.3.12f1 and after I did, visual studio is unable to find project references any project in solution. References to dlls are fine.

Unity seems fine, all references are found and I can enter playmode as well as build and run.

I checked my assembly definitions and confirmed that they have their references listed in the same way that was working before.

In VisualStudio I can see the references being listed in under project references, they also don’t have any warnings on top. Their path points to …myproject/obj/Debug/mydll.dll and indeed, there is not a single dll at that location. Just a bunch of .cache files. Now I wasn’t able to find, if this is what is supposed to be there or not.

So far, I tried to:

  1. Turn everything off and on again
  2. Look for solution on forums
  3. Regenerate solution and project files (backing them up and deleting, restarting Unity)
  4. Rebuild …myproject/obj folder
  5. Rebuild …myproject/Library folder
  6. BuildAndRun the project
    All to no avail.

Any help would be appreciated.

3

Opening my unity project back in 2019.3.7f1 fixed VS issues. I tried again opening it with the new version and it was broken again. I really want to get back to work, so I won’t investigate the differences in solution and project files generated at the moment, but once 2020.1 hits, I will try to update again and see.

2

I’m having the same issue from a 3rd party package I’m using. The package is split into 3 dlls, a core, an editor, and editor utils. The editor dll and utils reference the core dll.

Similar to the OP, these dlls are pointing to /obj/Debug/core.dll which does exist for me. The build order looks fine as well, but no matter what I try, VS just refuses to find these references.

I’ve deleted the package and re-added, deleted temp, Library, upgraded VS from 2017 to 2019, and deleted my GI cache. No luck.

EDIT: This issue seems fixed in the beta, 2020.1.0b7.