Its more than a firewall permission or a toggle of the hosting multiuser access.

Does anyone in this discussion have all the last 4 years from 2022 to 2019, any version of QB, with a Database manager for all 4 years working correctly allowing Multiuser mode access for all years not just one?

For reference, yes, I was using R3 during my testing.

Here is what I have experienced, and I ask you these questions:

Does anyone in this discussion have Windows server running the last 3 versions, any versions of 2021 to 2019, with Data base mangers working fine meaning multi users mode works? As for me Yes, I do. Multiuser mode has worked perfect for years now from versions 2014 to 2021.

Did Anyone add 2022 DBM version the way you have added all previous versions of Data base manager to that same server by selecting the option I will not be using QuickBooks on this computer; but I'll be storing our company file on it so the file can be shared over our network.? I did, it installed a 32-bit version of the DBM. Multiuser mode stopped working for all years installed. 2022 to 2019.

Did anyone install the entire software package plus the Database manager onto the server where previous versions of Database managers are installed using the installation option, I'll be using QuickBooks on this computer and storing our company file here so it can be shared over our network. ? I did and it installed a 64-bit version of the Database manager. Windows Service: QuickBooksDB32. Multiuser mode only worked for version 2022. All previous versions 2021 to 2019 multiuser mode stopped working.

My testing shows there is an issue with the windows database manager. The manager is only capable of working in either 32- or 64-bit mode. since all previous DBM's are 32bit, and the new software and the DBM are 64 bit this ends with users being able to ONLY access 2022 versions in Multiuser-mode. Also I will add Yes you can get a 32 bit only version of the 2022DBM, but it doesn’t work. No years will go into Multiuser Mode.

If you follow the recommended installation procedure of installing all the 2022 software and the database manager with QuickBooks installation option: I'll be using QuickBooks on this computer and storing our company file here so it can be shared over our network, You will be able to get 2022 versions into Multiuser mode because this will install the 64Bit version of the DBM.

If you are ONLY trying to get 2022 version to work in Multiuser mode in a stable environment the answer seems simple to me, After you properly install as mentioned above, Uninstall all previous versions of the Quick Books Database managers. Those services are named based on QuickbooksDBxx. The 2022 version of the Database manager is QuickbooksDB32. All previous versions will be less than 32. 31 for 2021, 30 for 2020, and 29 for 2019. In the windows control panel go to uninstall a program and remove and remove QuickBooks Enterprise Server XX. They are listed by version year. You have to use CMD line to remove the services left behind, or just disable the services on the server so they don’t try and start. Make sure to not remove the 2022 service called QuickBooksDB32. You need that one.

AS a CPA firm we need all available versions because we never know what our clients use so I still don’t see a fix for that.

So QuickBooks, What the word on how to get all supported versions 2022 to 2020 working?