Canot enable the recommendations for ubuntu software centre.

Use your login password. I assume you have used autologin.

Open the seahorse utility and clear up the passwords.

In terminal (CTRL+ALT+T) write:

    seahorse

at the opened window go to first tab and right click , then click on "Change Password" and leave it BLANK.
http://i.stack.imgur.com/VK0Ii.png

Regards
 NikTh

Thanks for all who replied,

for actionparsnip i had done that but it refuses i'm making my start up is auto login but for authintication it asks for the password and it accepts it except in that condition.

but for NikTh seahorse command gives me a blank window without any tabs.

Execute the commands below ...

   sudo apt-get update
   sudo apt-get dist-upgrade
   sudo update-apt-xapian-index -f -v

Then retest

Regards
 NikTh

The second command failed to execute, respondes to me to configure it manualy.

Can you please post the FULL results of the commands ? (or the failed command only).

Regards
 NikTh

i re-executed them and they workk
but the sea horse gave me a window with a green plus icon on the top left, when i press it it gives me a list
"
Password Keyring
PGP Key
Private Key
Secure shell Key
Stored password
"

i had selected the last one it gives me the ability add password when i gave password it said "Failed to add password" when i left it blank it hangs up.

Thanks for interesting.

Ubuntu Software Center uses the Single Sign On to login there (and be able to leave Recommendations - Comments ..etc).

You can remove (purge) software-center and re-install it , to see if this fixed.

Can you login to Ubuntu Software Center or not ?

Regards
 NikTh

"NikTh" thank you very much for helping, my problem had been solved using the following steps.

deleting all the keyring passwords using the command

rm ~/.local/keyrings/login.keyring

and when i pressed login in the software center it asked me for a new keyring password, i had entered it and then it logged in.

Many thanks for your followup with me.

But I think this is the same as I told you in second answer #2 (seahorse). Maybe you had to search in other tabs of seahorse..

Either way , Good to know that you solved it.

Regards
 NikTh