.html extension leading to wrong 404 page

[milind_bachani]

I have a scenario where if I access:
<domain>/blah-blah (non existing page) redirects me to correct 404 page.

BUT, if I access :
<domain>/blah-blah.html (non existing page with .html extension) redirects me to generic 404 page.

Expectation :
Both the scenarios should be redirecting me to custom 404 page (same as scenario1).

Open to suggestions, thanks in advance.

[DEBAL_DAS]

Are you accessing your website pages without .html extension? if yes then if we add rewrite rule at webserver when you request <domain>/blah-blah.html, it removes .html and redirects you to correct(same) 404 page.

We do have this behavior. 

[milind_bachani · Accepted solution]

@DEBAL_DAS , I was thinking in the same direction by adding :

RewriteRule ^/(.*).html$ /$1 [R=301,NE,L]

which strips out the html by default from all accessed URLs, but is it the only way to achieve it ?