No users or computers imported

[OscarMartin]

I am working on a fresh installation of app portal and I am getting the following error when trying to sync user/computer data? Any guidance you can provide to resolve this? The server does have a valid connection to SCCM. I am on App Portal 2019 R1. Thanks

A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: TCP Provider, error: 0 - The wait operation timed out.)

[CharlesW]

Under Settings ->deployment-> common, be sure that you have "syncing users" and "syncing computers" set to ConfigMgr as seen below.. If you are syncing user/computer data from somewhere other than the SCCM DB, then be sure that the connection strings that you have specified are correct,  and that "syncing users" and "syncing computers" is set to unknown. Generally, the format of the connection string is as follows

Data Source=<SQLserverName>;Initial Catalog=<DBName>;Integrated Security=True;