When running a repair of a 12.1 RU1 SEPM, the installation stops while in the wizard, with the error "Failed to install Management Server webserver service".
"Error: Failed to install Management Server webserver service".
Apache log error: <Data>(OS 10048)Only one usage of each socket address (protocol/network address/port) is normally permitted. : make_sock: could not bind to address 0.0.0.0:<port></Data>
The file httpd.conf in ./Symantec EndPoint Protection Manager/apache/conf/ had line `listen SEPM port listed twice.
Remove the `listen <port>` lines, then re-run the repair. The installation will complete. Confirm that the `listen <port>` line is now available. If not, add it in.