Click Start, click Control Panel, and then click Programs. In the Programs and Features area, click "TELNET CLIENT" Apply.
netsh ip reset
more info here : http://support.microsoft.com/kb/299357 When all else fails and you still cant get your network to work , try this.
disable auto tuning :
netsh interface tcp set global autotuninglevel=disabled
Quick Access to Control Panel items
Windows-Key+R or Start -> run :
ncpa.cpl – Networkcenter
appwiz.cpl – Add/Remove Application
devmgmt.msc -Hardware Management
compmgmt.msc – Computer Management
eventvwr.msc -Eventviewer
fsmgmt.msc – Shared Folders
wf.msc – Windows Firewall
perfmon – Perfomance Monitor
sdclt.exe – Vista ntbackup replacment
taskschd.msc – Task-scheduler
check your CA CRL or try :
certutil –setreg ca\CRLFlags +CRLF_REVCHECK_IGNORE_OFFLINE
How to move a dhcp scope from one windows 2003 server to another.
1. Export SCOPES from original server ( scopes 10.1.1.1 and 10.2.2.2 )
netsh dhcp server export scopes.txt 10.1.1.1 and 10.2.2.2
2. Import scopes on new server
netsh dhcp server import scopes.txt all
3. Change DHCP scope options
for %i in (10.1.1.1 10.2.2.2 ) do netsh dhcp server \\servername scope %i set optionvalue 006 IPADDRESS new_dns_ip new_dns2_ip ( DNS )
for %i in (10.1.1.1 10.2.2.2 ) do netsh dhcp server \\servername scope %i set optionvalue 044 IPADDRESS new_wins_ip new_wins2_ip ( WINS )
4. Disable scopes on old server
for %i in (10.1.1.1 10.2.2.2 ) do netsh dhcp server \\servername scope set state 0
5. Enable scopes on new server
for %i in (10.1.1.1 10.2.2.2 ) do netsh dhcp server \\servername scope set state 0
6. Delete scopes on old server ( BACKUP FIRST !!! )
for %i in (10.1.1.1 10.2.2.2 ) do netsh dhcp server \\servername delete scope %i