The problem here was that users could log in but were then told that they had not been assigned any models to access.  The users table was appropriately populated.  The problem was that even though the web app could access the perfectly fine users table, it was not aware of any models at all.  There were two causes here, neither of them obvious. First, the web INI needed to #include the flat file INIs from the application server. Those flat files include the "Models" blocks, so by not including them, the web INI had no "Models" block at all.  The full UNC path has to be included, and this should be noted as it is a non-conformity between staging and production. Second, the application directory at \\aces2\TeslaACES needed to be shared and have appropriate permissions applied.  Once I edited the web INI to #include all of the necessary flat file INIs, the problem persisted because NET\teslanetwork still could not access the flat files because it did not have permissions on \\aces2\TeslaACES, nor was that directory shared.