If changing the password is not an option, is there a best practice where the recommendation is to use a well-known account, like Network Services, rather than a user account?

The customer did not. We are experimenting with that on our test environment so we can be explicit in our documentation to recommend to customers how to install SSRS....

We have tried that in our test environment but that doesn't work. Now, since we had a SQL Server 2016 RC1 test system already configured, we are testing...