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regexapache.htaccessmod-rewrite

Too many redirects - redirecting IE to a specific page with htaccess

I'm trying to redirect IE-user to a specific page by using htaccess. This is what I got so far:

<IfModule mod_rewrite.c>
    RewriteEngine on

    RewriteCond %{HTTP_USER_AGENT} ^.*Trident.*$
    RewriteRule (.*) /not-supported-browser.html [R=301,L]
</IfModule>

But whenever I'm requesting some page with IE11, I'll get the error "too many redirects". I changed my condition to Firefox and Chrome, same behaviour so I think the condition is fine.

I'm using a CMS but this error also occurs when I'm deleting all CMS-specific rewrites in my htaccess.

Any ideas what I am missing?

Solution

  • You will get too many redirects because even after you redirect to not-supported-browser.html client browser remains same and first condition will still hold true.

    You can use this rule to prevent this behavior:

    RewriteEngine on

RewriteCond %{HTTP_USER_AGENT} Trident [NC]
RewriteRule !^not-supported-browser\.html$ /not-supported-browser.html [R=301,L,NC]

    Negative pattern !^not-supported-browser\.html$ will skip redirecting if page is already /not-supported-browser.html.

    Make sure to clear your browser cache when you test this change.