Website hosted on Plesk server is not accessible: ERR_TOO_MANY_REDIRECTS

Symptoms

• When trying to open a website example.com in a browser, the following error is shown:

  ERR_TOO_MANY_REDIRECTS

• Sometimes error starts occurring after enabling Google PageSpeed.

• Redirect checkers like redirect-checker.org shows that example.com is redirecting to www.example.com and back again.

Cause

Redundant redirects lead to an infinite redirect loop.

Resolution

Such an issue can occur if redirect is already configured in the.htaccess file, in Apache &Nginx Settings, or in the web application's (e.g. WordPress, Joomla) settings.

To fix the issue it is required to disable redirects in Plesk:

1. Log in to Plesk.

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

3. Change Preferred domain value to None and click OK:

   

4. Remove redirect rules under Domains > example.com > Apache & Nginx Settings, if any.

5. Remove redirect rules in the .htaccess file like the following:

   Redirect 301 /index.html http://www.example.com/

Additional information

Note: The number of redirections can be checked with the commands below. If result <4, redirections are fine:

• For a specific domain:

  Note: change the "example.com" domain in the command below to the correct one.

  # curl -s -k -L -I example.com | grep -E '301|302' | wc -l

• For all the domains:

  # plesk db -Ne "select name from domains" | xargs -i sh -c 'printf "{} " && curl -s -k -L -I {} | grep -E "301|302" | wc -l'