Troubleshooting Tip: Solve 'ERR_TOO_MANY_REDIRECTS' Browser Message

[Pedro_FTNT]

Description	This article describes how to troubleshoot 'ERR_TOO_MANY_REDIRECTS' Browser Message when trying to open a Web Page. The 'ERR_TOO_MANY_REDIRECTS' error is a common issue encountered when trying to access a website through a web browser. It typically occurs when there is a misconfiguration on the website or server, leading to an infinite loop of redirects, where the browser is continuously redirected from one URL to another without reaching a final destination.
Scope	FortiWeb.
Solution	This is a quick possible solution to solve this issue using FortiWeb 'URL Rewriting' and 'Regular Expression'. Site with issues: https://www.support.portal.tac.com Error: 'ERR_TOO_MANY_REDIRECTS'. FortiWeb Configurations. Go to: Application Delivery/URL Rewriting. Create a New URL Rewriting Rule. Complete using: Name: Redirect. Action Type: Request Action. Request Action: Redirect (301 Permanet). Select 'OK'. Complete URL Rewriting Condition Table: Object: HTTP Host. Regular Expression: ^support. Protocol Filter: Disable. Protocol: Not configured. Replacement Location/Location: https://www.support.portal.tac.com  Configure URL Rewriting Policy: Select the created URL Rewriting Rule named: Redirect.  Configure it on Rules TOP. Configure this URL Rewriting Policy in the Web Protection Profile: Configure this Web Protection Profile in the Policy Server: To know about Regular Expression Notation, check this FortiWeb document: Appendix E: Regular expressions