We are having problems syncing an AD Connect server due to 'random' issues. The AD Connect is setup on a 2012 VM running off HyperV. The host server is a 2008 R2 server. The contractor feels that the sync issues are due to the host server running Peachtree accounting. I don't feel confident that is the case and he has not provided any evidence that Peachtree is the issue. He wants me to build a new physical host with no other applications for AD Connect to work as it should, but I'm not yet convinced that doing this will be a solution and it will be an added cost to us. I've allocated 6gb of ram and plenty of storage for the AD Connect server VM which is well above the needed AD Connect requirements.
My question is why would Peachtree accounting (or any other production software for that matter) on the host server cause sync issues to an AD Connect VM?? We have no restrictive group policies or other local restrictions on the host server - it's just a standard application server that is pretty open.