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:

  PLESK_INFO: 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.

• Preferred domain value is set to example.com or www.example.com at Plesk > Domains > example.com > Hosting Settings.

Cause

Redundant redirects which lead to infinite redirect loop.

Resolution

Such issue can occur if redirect is already configured in .htaccess file, in Apache &Nginx Settings or in web application (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: 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:

  # for i in $(plesk bin domain –list); do echo $i && curl -s -k -L -I $i | grep -E ‘301|302’ | wc -l; done