We have a few clients that have a single physical server and have a service or application that is already using port 443. So when we attempt to upgrade from v12 to v13, it won’t install since 443 is being used and v13 uses it for the Veeam Web Service. Assuming we can temporarily disable this service/app to get the upgrade to complete, is there a way once v13 is installed to get the Veeam Web Service to use a different port?
Solved
Veeam B&R 13 Change Web Service Port 443
Best answer by AdmiralAR1
Response from support
Port 443 is required and hardcoded for the Veeam Web service/API Gateway in Veeam Backup & Replication v13.0.1.180 and newer. Unfortunately, there is no supported method to change the port for the Veeam Web service/API Gateway, nor is there a supported way to bypass the compatibility check.
I couldn’t get 13 to install.
I uninstalled ScreenConnect and Trend Micro Worry Free Business, which we put on every computer.
That didn’t work.
Disabled SmartScreen.
That didn’t work.
The machine is now running vanilla 2019 Datacenter with only Chrome installed, won’t install, and I’m tired of fighting it.
I’m putting 12 on until somebody comes up with a work around.
I’m staying with 12 until they allow a different port - on Community Editing for a SOHO installation with Windows Server and Server Essentials which itself needs 443 for operation. Don’t need and can’t afford a separate server and, from what others have said, looks like even setting this up on a VM would not work.
Really really bad architectural/design decision that makes 13 unusable for a significant number of users, meaning that they will stay on 12 with all the support challenges this will have for Veeam. Such a bad decision that I suspect many people affected will also have started looking again at alternatives.
Response from support
Port 443 is required and hardcoded for the Veeam Web service/API Gateway in Veeam Backup & Replication v13.0.1.180 and newer. Unfortunately, there is no supported method to change the port for the Veeam Web service/API Gateway, nor is there a supported way to bypass the compatibility check.
Not acceptable. Fix that.
This is an out-of-touch poor decision by them. Not everyone can afford dedicated servers for backups yet we still need backups. In our case, we managed to adjust 2 customer servers but on our own server we have ADFS on 443 and I cannot change that. So, I must either stick with version 12 or go somewhere else.
+2Hello,
please see https://forums.veeam.com/viewtopic.php?p=572518#p572518 (I did not read the thread, I was just pointed to it and provide the solution for future readers)
Best regards
Hannes
Re: Major Issues After Upgrading to Veeam V13: Port 443 Conflict
Post by HannesK » Jul 17, 2026 6:27 am 1 person likes this post
Hello,
for future readers: in v13.1 the port can be changed during installation or via registry key after installation (we talk about Windows only, because on Veeam Software Appliance the issue with conflicting software does not exist).
13.1 is planned to be released during the next weeks.
Best regards
Hannes
Finally, looks like we are going to have a resolution for this issue soon!
As of today (27 July 2026) the Veeam Backup & Replication 13.1 page is live as “coming soon”.
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