Russian (Russia) 
English (United Kingdom) I struggled with the problem for a long time: after installing \ reinstalling WSUS it works for a while, then writes: there is no connection to the console.
The solution turned out to be simple and equally stupid execution of Microsoft developers. Is it really impossible to display the desired parameter of the allocated memory when installing WSUS.
Yes, the problem turned out to be the size of the allocated memory for the WSUS tools.
You need to go to IIS, Application Pools and in WsusPool select Advanced Options.
And set the Limit of allocated memory to at least 4,000,000 kilobytes. Yes, Microsoft still measures memory in kilobytes. 😂.