: Run the following command to find the Process ID (PID) using the port: Get-NetTCPConnection -LocalPort 443 | Select-Object LocalAddress, LocalPort, OwningProcess, State .
Run the following command to see what is listening on port 443: netstat -ano | findstr :443 Use code with caution. Copied to clipboard Locate the Application: Note the PID in the far-right column (e.g., ). Use this command to see the application name: tasklist /FI "PID eq [YOUR_PID]" Use code with caution. Copied to clipboard Alternative: Task Manager , go to the tab, and sort by PID. 2. Common Culprits Several services frequently "park" on port 443: Hyper-V Replication: If your VBR server also acts as a Hyper-V Replica server, it may be using 443. IIS (Internet Information Services):
Now you know the name of the offender.
Click , type cmd , right-click Command Prompt , and select Run as administrator . Type the following command and press Enter : netstat -ano | findstr :443 Use code with caution.
You’re installing or upgrading Veeam Backup & Replication, and suddenly you hit a roadblock: : Run the following command to find the
Open and run:
Open VMware Workstation, go to Edit > Preferences > Shared VMs . Click Change Settings , disable sharing, or change the port number to 444. 3. Apache, Nginx, or Tomcat Use this command to see the application name:
Before you can proceed, you need to know which service is "squatting" on port 443.