Is Occupied By Another Application Link - Required Port 443 For Veeam Backup Replication

Because Veeam v13 enforces a strict, unskippable validation check for port 443 during its installation routine, use this deployment strategy to guarantee success:

He clicked the "Details" link, his eyes scanning the error log until they locked onto the fatal sentence:

: Often uses 443 for HTTPS-based replication. Because Veeam v13 enforces a strict, unskippable validation

Sort by the column to find the number you discovered in Step 1. Right-click the process and select End process tree .

tasklist /svc /fi "PID eq 4988"

Run netstat -aon | findstr :443 in an elevated Command Prompt. The last column displays the Process ID (PID) using the port .

"Hey Elias," Kevin had said, looking slightly nervous. "I needed to spin up a quick test lab to simulate that patch for the accounting software. I didn't want to bother the production cluster, so I just threw it on the repo server since it has all that RAM. Is that cool?" tasklist /svc /fi "PID eq 4988" Run netstat

If you cannot modify the conflicting application, change the port Veeam uses. Open the .

Veeam Backup & Replication is a comprehensive data protection solution designed to ensure business continuity by providing backup, replication, and restore capabilities for virtual, physical, and cloud-based environments. For its operations, especially in environments where SSL/TLS encryption is required, Veeam Backup & Replication relies on specific network ports. Port 443, the standard port for HTTPS, is one such critical port. "I needed to spin up a quick test