Running into a problem with logging from Windows 7 to connect to a Windows 2008 SBS Server. This was due to the latest windows update KB4103712 in March 2018.
To fix this problem, you need to create the following registry on the windows 7 desktop
Registry path: HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\CredSSP\Parameters
Value: AllowEncryptionOracle (DWORD): 2
To clean up windows component store (C:\Windows\WinSxS).
By default, the self-signed certificate for Windows SBS 2008 is valid for 2 years. Upon expiration, OWA will prompt an error about the certificate expiratory. Outlook will not be able to connect to Exchange Server. To Renew the Self-signed certificate, here are the steps to fix it.
1. Open Windows SBS Console.
2. Click Network and then Connectivity Tab
3. View Certificate Properties to verify certificate expiration date
4. to fix the certificate issue. Under the Connectivity Tasks -> Click Fix my network
To add a wildcard DNS entry to Windows 2000 DNS Server, you will need to create this under the CLI
for example, if you would like to add an entry like
*.dev.vicosys.com.hk
Try the following command
dnscmd.exe /RecordAdd vicosys.com.hk *.dev A 1.1.1.1
The default setting on Windows 2008 Firewall is configured to block certain types of traffic. One of them being ICMP.
To enable ICMP
netsh firewall set icmpsetting 8
To disable ICMP
netsh firewall set icmpsetting 8 disabled
You ever have a problem trying to start an application and it failed to start because the network port was occupied by another application? To find out the application that using the port is painstaking. The following commands could help you.
In the following example, I am trying to find what is the process that is occupying the port 8080.
Windows
C:\Documents and Settings\terence>netstat -aon | findstr 8080
TCP 0.0.0.0:8080 0.0.0.0:0 LISTENING 1748C:\Documents and Settings\terence>tasklist | findstr 1748
TNSLSNR.EXE 1748 Console 0 6,264 K
Linux
[root@mail03a ~]# netstat -nap | grep 8080 | grep LISTEN
tcp 0 0 0.0.0.0:8080 0.0.0.0:* LISTEN 2685/openvpn
To change the listening port on Microsoft Windows.
Run “regedit”
Change the port value under the following key.
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\TerminalServer\WinStations\RDP-Tcp\PortNumber