If you get error “Error HTTP 401.2 — Unauthorized” you can locally disable authentication in following steps:
Open regedit and go to: HKEY_LOCAL_MACHINE > SYSTEM > CurrentControlSet > Control > Lsa > MSV1_0
Add multiline key value (“REG_MULTI_SZ”) with name “BackConnectionHostNames”. As value enter hostnames of your IIS applications.
Inside IIS application in authorization section select ” Windows authentication” and change providers order into following:
After these steps your error should be gone.