Some pages of a website on Plesk for Windows return 403

Symptoms

• Some content (e.g. images) of the website example.com hosted in Plesk is not shown correctly

• In the network tab of a web browser development console (F12) these elements have response code 403.

• The detailed error code is 403.502 is shown in the failed requests with enabled Failed Requests Tracing via Domains > example.com > Failed Requests Tracing with the following parameters:

  • Status codes - 403
  • Provider - WWW Server

Cause

Code 403.502 - Too many requests from the same client IP; Dynamic IP Restriction limit reached.

Resolution

1. Log in to Plesk

2. Navigate to Domains > example.com > IIS Settings

3. Either disable the option Deny IP addresses based on the number of requests over a period of time or adjust the Maximum number of requests and/or Time period: