Urls with %2f /
or %5c \
return a 404 from Apache
for security purposes.
You may modify Apache config to enable AllowEncodedSlashes On
or NoDecode
. Keep in mind that this may introduce unintended security issues, which this “feature” is designed to mitigate.
Apache docs: http://httpd.apache.org/docs/current/mod/core.html#allowencodedslashes
Solved:
This one got me too — thanks for the question