Proxy Login Popups on Mavericks

I have updated my Mac OS from Snow Leapord to Mevericks recently. I work behind proxy and I have set proxy for network and saved creadentials in Keychain too.

Still I get annoying system prompts for logging into proxy too many times.

Any solution to get rid of the Proxy login Popups ?

EDIT

I did following steps

1. deleted proxy credentials from keychain List item
2. removed the same from Proxy Settings
3. Added proxy settings again ( without credentials )
4. tried to access google from safari it prompts for crdentials ( twice - maybe for http and https connections as I am adding proxy for both ) -- After above prompts I can see my credentials saved in kechain as well for proxy
5. Still can not access google from safari, can access same from Firefox / chrome ( they have seperate prompt for login ), even can access itune store from iTunes. (iTunes asked me for keychain access of proxy )
6. removed https proxy and kept only http, now I can not Access iTune Store so added the same again

Here are my keychain attributes for proxy

Name : 127.0.1.1 (vishal.kardode)

Kind : Internet Password

Account : vishal.kardode

Where : http:// 127.0.1.1:80 ( for https proxy its https://... )

Comments : default

Added space between "http://" and "127.0.." as it was not allowing to post

EDIT2

The Issue Persists, now I can not conect to iTunes Store either ( using iTunes ) every time I open Safari or iTunes I get the prompt, every time keychain gets updated as I login using the prompt but not able to connect to https://google.com or iTunes Store. Surprisingly I can connect to other https site Here is screenshot of the proxy authentication prompt

I have changed the ip of proxy server in above post to 127.0... . Actual ip starts with 172...

Pregunta rápida primero, ¿está configurando los proxies manualmente o está obteniendo la configuración a través del descubrimiento automático o una URL de configuración automática de proxy (APC)?

Si los está configurando manualmente, entonces debería poder seleccionar Proxy Server requires passworde ingresar las credenciales correctas allí.

Si los obtiene como una URL de APC, entonces puede tener un problema con ese llavero en particular. Usando la Keychain Accessutilidad, busque tanto en su logincomo en los iCloudllaveros y elimine los que encuentre para el servidor proxy.

Ahora debería poder guardar sus credenciales correctamente.

Copy the two proxy entries from your "log in" key chain into tHe "system" key chain and listo. That worked for me, an issues that drove me nuts over this past year.

OK, now you are starting to add some details lets get down to some decent testing.

Delete the keychains again.

Go into the Network settings and make sure that you have just the required text in both server fields for Web Proxy and Secure Web Proxy. Absolutely make sure by emptying the field and retyping the server name. Tick Proxy Server requires password and enter your login and password.

Reboot the computer.

Now try accessing two different websites, one that uses https and one that doesn't.

If you get prompted for your credentials provide them. Now go and check to see if a keychain item has been created for the proxy server.

It would also be good to know what your IP address is and why your work is using 127.* addresses