Hi,

I have recently upgraded an Apps10 environment to UPD26 and after the delivery installation EE end user link is not working and having the error below yet EE Admin URL is working. There are no visible errors in the deployment or application windows even Aurena works fine 

The URI https://server_name/main/default/clientgateway cannot be found. Please contact your system administrator.

Error 404 - Not Found

Http server logs has following error

[user: SYSTEM] [ecid: 00jbwgldUUlFw0zmvs04JzA9ZLU0jWIxJ0003bK00000a] [rid: 0] [VirtualHost: server_name:0] <00jbwgldUUlFw0zmvs04JzA9ZLU0jWIxJ0003bK00000a> Write to the client failed: calling URL::close at line 608 of BaseProxy.cpp, referer https://server_name/openid-connect-provider/login?rf=lLYoUfhTtp&ui_locales=en-US&prompt=select_account

This environment is not configured to used with 3rd party identity providers
 

Tried reinstalling the instance, restarting full environment but nothing helped so far. Any lead would be much appriciated