Artifactory can be used as a NuGet symbol server only with TFS, and Artifactory should be installed on Windows with IIS configured. As part of the configurations, we need to set the URL to the virtual directory name configured in locally installed Symbol Server (i.e. "http://localhost/symbols" ) to the Remote repository (i.e microsoft-symbols-IIS). Currently, this is not supported for the Saas instances since there is no way to set the path directly to the TFS machine(Artifactory) because the symbol server cannot accept a URL as a path. Please refer to the documentation on configuring Artifactory as a Symbol server for more information.
Artifactory Saas instances also should support the Microsoft Symbol Server plugin.