htaccess mistake & How to force the client's browser to clear the cache?

Question

I made a terrible mistake, And set long expire date to my files (including index.php).

   ExpiresDefault                          "access plus 3 week"

Now a lot of my users get the old file and because it's the index file of the directory I can't use ?v=1 trick.

I don't want to rename the directory because of SEO reasons.

Is there is any other option?

Answer 1

You can use .htaccess to move it to another folder. With the updated index.php file.

In three weeks, remove redirect to sub folder and update the original index.php.Try a 302 redirect. Redirect 302 / /tempfolder