Web Client is not reachable after using List Designer
List of Designer requires a relatively large memory, which then not much is left for the Web client.
To separate this follow these steps:
Create a new Web instance with a name and a targedirectory, eg Designer List
Then create a new application pool (v4. NET, classic) in IIS
Assign the application pool of the new Web instance
Now open the list Deisgner allways via this new Web instance. You can select in the result / task list on which instance of the designer is to be opened.
Thus List designers and WebClient works with different Applicationpools, which takes place no more influence.
The settings changed in List Web designers are applicable instance overall.