After adding right password fornt side wp,
post not open and it's say
Not Found Apologies, but the page you requested could not be found. Perhaps searching will help.
how to solve this?
if you have custom password request form, make sure that you made updates to it. as for me after updating from 3.3 to 3.5 i realized that password request form action attribute have been changed from
/wp-pass.php to /wp-login.php?action=postpass
I have not run into the "page not found" error but I did run into an issue where the content was not showing up after entering a password. After some WordPress debugging I found JetPack was crashing when trying to render the content due to missing php-xml (XML Dom Document support) and php-mbstring (Multibyte support) modules. Installed both and restarted the web server to solve the problem.
Details are here if you are interested.