Package not found under Unity 2019.3

[aka-STInG]

An error occurred while resolving packages:
Project has invalid dependencies:
com.microsoft.msbuildforunity: Package [[email protected]] cannot be found

Probably it has something to do with cache folder location.
For default upm source it is [LOCAL APP DATA]\Unity\cache\npm\packages.unity.com
For the one specified in integration guide it appears to be [LOCAL APP DATA]\Unity\cache\npm\pkgs.dev.azure.com\UnityDeveloperTools\MSBuildForUnity\_packaging\UnityDeveloperTools\npm\registry\pkgs.dev.azure.com\UnityDeveloperTools\MSBuildForUnity\_packaging\UnityDeveloperTools\npm\registry

[KuraiAndras]

The package version 0.9.1 is not valid when using the package manager. Use the package manager UI and get the closest version to 0.9.1

[nbaum]

AFAIK, the package doesn't appear in the package manager - because it can't be resolved - so there's no way to choose a different version.
@aka-STInG I have found that version 0.8.3 works. That seems to be the latest working version. (Testing on Unity 2020.1)

[KuraiAndras]

For me it shows, but has a warning saying that the version can not be found. Then I just select a more specific version from the UI

[XanNava]

Not showing at all for me in package manager unity 2019.4.6f1.