ARR - Use External Cache - Value does not fall within the expected range

[carrzkiss]

Hello All;

Windows 2016 Server IIS 10 ARR

Use External Cache > Value does not fall within the expected range.

IIS > ServerName > Server Farms > FarmName > [Server Affinity] When I enable [x]Use external cache File Share Path: \Cache01\Caching Then set either Worker process (OR) Specific user = domain\usersname

Click on [Apply] I get this error.

Server Affinity There was an error while performing this operation. Detail: Value does not fall within the expected range.

I then added the Specific user as the [Identity] of the application pool. And still the same error.

I checked the Event Viewer, and there is nothing listed for this error.

I am following the instructions on this link here. Using Multiple Instances of Application Request Routing (ARR) Servers

Everything is ready; I just need to get this part done. Thanks for any assistance anyone can give me.

Wayne