Skip to Main Content

Required Port 443 For Veeam Backup Replication Is Occupied By Another Application Link [exclusive] Jun 2026

Required Port 443 For Veeam Backup Replication Is Occupied By Another Application Link [exclusive] Jun 2026

: Sometimes conflicts with Veeam's ability to load its console. How to Resolve the Conflict Since port 443 is

Change the specified HTTPS port from 443 to an alternative open port (such as 4443 ).

If you find yourself stuck in a situation where neither the conflicting service nor Veeam can be moved, the best path forward is to open a support case with Veeam to confirm whether any unsupported workarounds exist for your specific version and environment. However, as Veeam themselves have stated, a dedicated server remains the only fully supported and secure long-term solution.

For minor standalone management utilities or secondary services: Open services.msc via the Windows Run dialog ( Win + R ). : Sometimes conflicts with Veeam's ability to load

net stop W3SVC sc config W3SVC start= disabled

Look at the lines indicating a LISTENING state. The number at the far right of the output is the . To identify the application name by its PID, run: tasklist /FI "PID eq " Use code with caution. Common Culprits in Veeam Environments

: Co-locating management tools that use embedded web servers. However, as Veeam themselves have stated, a dedicated

What did the netstat command show as occupying the port? Is this a physical server or a virtual machine (VM) ? Share public link

SSRS is a notorious port 443 hog. Even if you stop the service, the URL reservation persists.

Update the in each VM's replication settings to match the new port to avoid re-replicating data. Stop and Disable Conflicting Services : The number at the far right of the output is the

: After upgrading to Veeam v13, the Veeam Web Service will still require port 443 to function. If you restart the conflicting service, Veeam will fail to work properly [12†L44-L47][13†L16-L19].

Run the following command to find the application associated with that PID:

: Sometimes conflicts with Veeam's ability to load its console. How to Resolve the Conflict Since port 443 is

Change the specified HTTPS port from 443 to an alternative open port (such as 4443 ).

If you find yourself stuck in a situation where neither the conflicting service nor Veeam can be moved, the best path forward is to open a support case with Veeam to confirm whether any unsupported workarounds exist for your specific version and environment. However, as Veeam themselves have stated, a dedicated server remains the only fully supported and secure long-term solution.

For minor standalone management utilities or secondary services: Open services.msc via the Windows Run dialog ( Win + R ).

net stop W3SVC sc config W3SVC start= disabled

Look at the lines indicating a LISTENING state. The number at the far right of the output is the . To identify the application name by its PID, run: tasklist /FI "PID eq " Use code with caution. Common Culprits in Veeam Environments

: Co-locating management tools that use embedded web servers.

What did the netstat command show as occupying the port? Is this a physical server or a virtual machine (VM) ? Share public link

SSRS is a notorious port 443 hog. Even if you stop the service, the URL reservation persists.

Update the in each VM's replication settings to match the new port to avoid re-replicating data. Stop and Disable Conflicting Services :

: After upgrading to Veeam v13, the Veeam Web Service will still require port 443 to function. If you restart the conflicting service, Veeam will fail to work properly [12†L44-L47][13†L16-L19].

Run the following command to find the application associated with that PID:

chat loading...