How to update steam platform manually

[atx191]

i installed and re-installed steam and the software is getting updated but when i try to update the platform, a message on the dialog box says "cannot connect to the steam network" and this happens every time i try to update the platform -please somebody help me on this- it's so FRUSTRATING!!!!

 

[silverliquicity]

Are you in offline mode?

 

[AntiZig]

do you have a custom firewall or router firewall?