Make sure failed request tracing (FRT) is installed
You can tell if FRT is installed because when you open the IIS manager and select a web site the option to Failed Request Tracing… option is missing.
Fig 1 - IIS Manager with no Failed Request Tracing… option
To enable this feature:
1. Open the Server Manager.
2. Expand Roles and select Web Server (IIS).
Fig 2 – The Server Manager
3. Scroll down to the Role Services section.
4. The Tracing feature will not be installed.
Fig 3 – Tracing feature not installed.
4. Click Add Role Services.
5. Enable Tracing.
Fig 4 – Enable Tracing
6. Click Next etc. to install the feature.
7. Close the Server Manager and reopen the IIS Manager and select a web site.
8. Failed Request Tracing… is now available.
Fig 5 – Failed Request Tracing… is now available.
9. Click on Failed Request Tracing… and select Enable.
10. Click OK.
Fig 6 – Enable Failed Request Tracing…