Contents
Windows update uses port 80 for HTTP and port 443 for HTTPS.
What port does Gpupdate use?
Protocols and Ports Required for Monitoring Active Directory, Exchange, and Group Policy
| Port | Protocol | Purpose |
|---|---|---|
| 3268 | TCP | LDAP Group membership GC search |
| 3269 | TCP | Global catalog LDAP over SSL |
| 88 | TCP/UDP | Kerberos authentication |
| 135 and dynamic range: 1024 -65535 | TCP | Windows Management Instrumentation. gpupdate /force |
What URL does Windows Update use?
Sites required for Windows Updates
. http://*.download.windowsupdate.com.
