After patch SPC104 instalation on U2000 NE Explorer display message then you connect to NE: failed to connect with web server (see screenshot, left bottom corner red string).
Also these problems registered in NE explorer:
Disappeared menu “Control plane” in NE explorer-configuration.
Disappeared menu “Link Configuration” in NE explorer for RTN equipment.
No “DCN management” menu in NE Explorer >Communication > DCN Management.
1. Change in U2000\server\common\uflightdispatcher\conf\ urlconfig.xml configuration scrip current IP count to 127.0.0.1
2. Restart U2000 proceses:
xxx - type of equpment
yyy: number of NE management instance (all should be restarted)
For example: nemgr_ptn_876 or nemng_rtn_2426
For example check screenshoot (2). In my case need restart only selected processes because only PTN and RTN equpment manage from U2000. In case of big PTN count there are three NE instances for PTN.