I have installed the SEP 12.1.5 (only AV) on windows 2003 server (removed the old sep 12.1.1) and after the installation sep clients is not communication to SEPM 12.1.5.
Steps done :-
Replaced sylink through console,manuall - no improment
Client does not able to register with SEPM console
Ran the sylink debug logg and finding are
015/02/11 17:54:35.976 [7888:5012] Snac HiTest:0, 0
2015/02/11 17:54:35.976 [7888:7816] Starting SMC GUI
2015/02/11 17:54:35.976 [7888:7816] Enterprise version, Build 0!!!
2015/02/11 17:54:35.976 [7888:7816] user_id = IMATION/im694364
2015/02/11 17:54:35.976 [7888:5012] SMCGui - 7596: CSmcDlg::Profile() - ImportFromDm() returned...
2015/02/11 17:54:35.976 [7888:5012] SMCGui - 7596: CSmcDlg::UpdateProfileInfoA043-01/24/2015 02:13:44 308:My Company\Default Group
2015/02/11 17:54:36.476 [7888:5012] Saving SMC State
2015/02/11 17:54:36.476 [7888:5012] Skip saving state because Engine is not running
2015/02/11 17:54:55.835 [7888:3280] <SyLink>[MakeRegisterData] registration Hardware Key=658FF3DDACD31DFEE9A1BFAFF09B97B2
2015/02/11 17:54:55.835 [7888:3280] AH: Setting the Browser Session end option & Resetting the URL session ..
2015/02/11 17:54:56.398 [7888:3280] <ParseHTTPStatusCode:>500=>500 INTERNAL SERVER ERROR
2015/02/11 17:54:56.398 [7888:3280] <SyLink>[SendRegsitrationRequest] Request Result= 5
2015/02/11 17:54:56.413 [7888:3280] ###### Set ACSConnec offline
2015/02/11 17:54:56.413 [7888:3280] CProfileMgrManPlugin::ReceiveMessage: enter
2015/02/11 17:54:56.413 [7888:3280] ProfileMgrMan: ReceiveMessage with msg id 262146
2015/02/11 17:54:56.413 [7888:3280] CProfileMgrManPlugin::ReceiveMessage: exit
2015/02/11 17:54:56.413 [7888:3280] AVMan: Entering ReceiveMessage with msg id 262146
2015/02/11 17:54:56.413 [7888:3280] AVMan: Leaving ReceiveMessage
2015/02/11 17:54:56.413 [7888:3280] LUMan: Entering ReceiveMessage with id 0x40002
2015/02/11 17:54:56.413 [7888:3280] AtpiMan: Entering ReceiveMessage with msg id 262146
2015/02/11 17:54:56.413 [7888:3280] AtpiMan: Leaving ReceiveMessage
2015/02/11 17:54:56.413 [7888:3280] BashMan: Entering ReceiveMessage with msg id 262146
2015/02/11 17:54:56.413 [7888:3280] BashMan: Leaving ReceiveMessage
2015/02/11 17:54:56.413 [7888:3280] NETSECMAN: Entering ReceiveMessage with msg id 262146
2015/02/11 17:54:56.413 [7888:3280] NETSECMAN: Leaving ReceiveMessage
2015/02/11 17:54:56.413 [7888:3280] RebootMgrMan: Entering ReceiveMessage with msg id 262146
2015/02/11 17:54:56.413 [7888:3280] RebootMgrMan: Leaving ReceiveMessage
2015/02/11 17:54:56.413 [7888:3280] RepMgtMan: Entering ReceiveMessage with msg id 262146
2015/02/11 17:54:56.413 [7888:3280] RepMgtMan: Leaving ReceiveMessage
2015/02/11 17:54:56.413 [7888:3280] SubmissionsMan: Entering ReceiveMessage with msg id 262146
2015/02/11 17:54:56.413 [7888:3280] SubmissionsMan: Leaving ReceiveMessage
2015/02/11 17:54:56.929 [7888:3280] <SyLink>[MakeRegisterData] registration Hardware Key=658FF3DDACD31DFEE9A1BFAFF09B97B2
2015/02/11 17:54:56.929 [7888:3280] AH: Setting the Browser Session end option & Resetting the URL session ..
2015/02/11 17:54:57.148 [7888:3280] <ParseHTTPStatusCode:>500=>500 INTERNAL SERVER ERROR
2015/02/11 17:54:57.148 [7888:3280] <SyLink>[SendRegsitrationRequest] Request Result= 5
2015/02/11 17:54:57.163 [7888:3280] ###### Set ACSConnec offline
2015/02/11 17:54:57.163 [7888:3280] CProfileMgrManPlugin::ReceiveMessage: enter
2015/02/11 17:54:57.163 [7888:3280] ProfileMgrMan: ReceiveMessage with msg id 262146
2015/02/11 17:54:57.163 [7888:3280] CProfileMgrManPlugin::ReceiveMessage: exit
2015/02/11 17:54:57.163 [7888:3280] AVMan: Entering ReceiveMessage with msg id 262146
2015/02/11 17:54:57.163 [7888:3280] AVMan: Leaving ReceiveMessage
2015/02/11 17:54:57.163 [7888:3280] LUMan: Entering ReceiveMessage with id 0x40002
2015/02/11 17:54:57.163 [7888:3280] AtpiMan: Entering ReceiveMessage with msg id 262146
2015/02/11 17:54:57.163 [7888:3280] AtpiMan: Leaving ReceiveMessage
2015/02/11 17:54:57.163 [7888:3280] BashMan: Entering ReceiveMessage with msg id 262146
2015/02/11 17:54:57.163 [7888:3280] BashMan: Leaving ReceiveMessage
2015/02/11 17:54:57.163 [7888:3280] NETSECMAN: Entering ReceiveMessage with msg id 262146
2015/02/11 17:54:57.163 [7888:3280] NETSECMAN: Leaving ReceiveMessage
2015/02/11 17:54:57.163 [7888:3280] RebootMgrMan: Entering ReceiveMessage with msg id 262146
2015/02/11 17:54:57.163 [7888:3280] RebootMgrMan: Leaving ReceiveMessage
2015/02/11 17:54:57.163 [7888:3280] RepMgtMan: Entering ReceiveMessage with msg id 262146
2015/02/11 17:54:57.163 [7888:3280] RepMgtMan: Leaving ReceiveMessage
2015/02/11 17:54:57.163 [7888:3280] SubmissionsMan: Entering ReceiveMessage with msg id 262146
2015/02/11 17:54:57.163 [7888:3280] SubmissionsMan: Leaving ReceiveMessage
2015/02/11 17:54:57.679 [7888:3280] <SyLink>[MakeRegisterData] registration Hardware Key=658FF3DDACD31DFEE9A1BFAFF09B97B2
2015/02/11 17:54:57.679 [7888:3280] AH: Setting the Browser Session end option & Resetting the URL session ..
2015/02/11 17:54:57.898 [7888:3280] <ParseHTTPStatusCode:>500=>500 INTERNAL SERVER ERROR
2015/02/11 17:54:57.898 [7888:3280] <SyLink>[SendRegsitrationRequest] Request Result= 5
2015/02/11 17:54:57.913 [7888:3280] ###### Set ACSConnec offline
2015/02/11 17:54:57.913 [7888:3280] CProfileMgrManPlugin::ReceiveMessage: enter
2015/02/11 17:54:57.913 [7888:3280] ProfileMgrMan: ReceiveMessage with msg id 262146
2015/02/11 17:54:57.913 [7888:3280] CProfileMgrManPlugin::ReceiveMessage: exit
2015/02/11 17:54:57.913 [7888:3280] AVMan: Entering ReceiveMessage with msg id 262146
2015/02/11 17:54:57.913 [7888:3280] AVMan: Leaving ReceiveMessage
2015/02/11 17:54:57.913 [7888:3280] LUMan: Entering ReceiveMessage with id 0x40002
2015/02/11 17:54:57.913 [7888:3280] AtpiMan: Entering ReceiveMessage with msg id 262146
2015/02/11 17:54:57.913 [7888:3280] AtpiMan: Leaving ReceiveMessage
2015/02/11 17:54:57.913 [7888:3280] BashMan: Entering ReceiveMessage with msg id 262146
2015/02/11 17:54:57.913 [7888:3280] BashMan: Leaving ReceiveMessage
2015/02/11 17:54:57.913 [7888:3280] NETSECMAN: Entering ReceiveMessage with msg id 262146
2015/02/11 17:54:57.913 [7888:3280] NETSECMAN: Leaving ReceiveMessage
2015/02/11 17:54:57.913 [7888:3280] RebootMgrMan: Entering ReceiveMessage with msg id 262146
2015/02/11 17:54:57.913 [7888:3280] RebootMgrMan: Leaving ReceiveMessage
2015/02/11 17:54:57.913 [7888:3280] RepMgtMan: Entering ReceiveMessage with msg id 262146
2015/02/11 17:54:57.913 [7888:3280] RepMgtMan: Leaving ReceiveMessage
2015/02/11 17:54:57.913 [7888:3280] SubmissionsMan: Entering ReceiveMessage with msg id 262146
2015/02/11 17:54:57.913 [7888:3280] SubmissionsMan: Leaving ReceiveMessage
2015/02/11 17:56:04.429 [7888:3280] <SyLink>[MakeRegisterData] registration Hardware Key=658FF3DDACD31DFEE9A1BFAFF09B97B2
2015/02/11 17:56:04.429 [7888:3280] AH: Setting the Browser Session end option & Resetting the URL session ..
2015/02/11 17:56:04.992 [7888:3280] <ParseHTTPStatusCode:>500=>500 INTERNAL SERVER ERROR
2015/02/11 17:56:04.992 [7888:3280] <SyLink>[SendRegsitrationRequest] Request Result= 5
2015/02/11 17:56:05.007 [7888:3280] ###### Set ACSConnec offline
2015/02/11 17:56:05.007 [7888:3280] CProfileMgrManPlugin::ReceiveMessage: enter
2015/02/11 17:56:05.007 [7888:3280] ProfileMgrMan: ReceiveMessage with msg id 262146
2015/02/11 17:56:05.007 [7888:3280] CProfileMgrManPlugin::ReceiveMessage: exit
2015/02/11 17:56:05.007 [7888:3280] AVMan: Entering ReceiveMessage with msg id 262146
2015/02/11 17:56:05.007 [7888:3280] AVMan: Leaving ReceiveMessage
2015/02/11 17:56:05.007 [7888:3280] LUMan: Entering ReceiveMessage with id 0x40002
2015/02/11 17:56:05.007 [7888:3280] AtpiMan: Entering ReceiveMessage with msg id 262146
2015/02/11 17:56:05.007 [7888:3280] AtpiMan: Leaving ReceiveMessage
2015/02/11 17:56:05.007 [7888:3280] BashMan: Entering ReceiveMessage with msg id 262146
2015/02/11 17:56:05.007 [7888:3280] BashMan: Leaving ReceiveMessage
2015/02/11 17:56:05.007 [7888:3280] NETSECMAN: Entering ReceiveMessage with msg id 262146
2015/02/11 17:56:05.007 [7888:3280] NETSECMAN: Leaving ReceiveMessage
2015/02/11 17:56:05.007 [7888:3280] RebootMgrMan: Entering ReceiveMessage with msg id 262146
2015/02/11 17:56:05.007 [7888:3280] RebootMgrMan: Leaving ReceiveMessage
2015/02/11 17:56:05.007 [7888:3280] RepMgtMan: Entering ReceiveMessage with msg id 262146
2015/02/11 17:56:05.007 [7888:3280] RepMgtMan: Leaving ReceiveMessage
2015/02/11 17:56:05.007 [7888:3280] SubmissionsMan: Entering ReceiveMessage with msg id 262146
2015/02/11 17:56:05.007 [7888:3280] SubmissionsMan: Leaving ReceiveMessage
2015/02/11 17:56:05.523 [7888:3280] <SyLink>[MakeRegisterData] registration Hardware Key=658FF3DDACD31DFEE9A1BFAFF09B97B2
2015/02/11 17:56:05.523 [7888:3280] AH: Setting the Browser Session end option & Resetting the URL session ..
2015/02/11 17:56:05.773 [7888:3280] <ParseHTTPStatusCode:>500=>500 INTERNAL SERVER ERROR
2015/02/11 17:56:05.773 [7888:3280] <SyLink>[SendRegsitrationRequest] Request Result= 5
2015/02/11 17:56:05.788 [7888:3280] ###### Set ACSConnec offline