"Active Server Pages Error ASP 0131" and/or HTTP 500 Internal Server Error while trying to access some pages on the Administration page of NFA 9.1.x

Document ID : KB000020956
Last Modified Date : 14/02/2018
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Trying to access pages such as example "Administration->Time filters", "Administration->Addresses", etc the following error is showed:

Active Server Pages Error ASP 0131
Disallowed Parent Path

You may also get an "HTTP 500 Internal Server Error"

Figure 1


This is due ASP configuration error where "Enable Parent Paths" is disabled.

To resolve the problem please follow the steps below:

  1. Open "Internet Information Services(IIS) Manager"

  2. Click Default Web Site

  3. Double-click ASP in the Features pane.

    Figure 2

  4. Expand Behavior and Click Enable Parent Paths"

  5. Click True for Enable Parent Paths.

  6. Click Apply.

  7. From a command prompt as an Administrator run "iisreset"

    Figure 3

  8. Test again after IIS recycles and verify you can now access all of the Administration pages