ArchiveOne For Files, all versions
If the ArchiveOne For Files services are unable to communicate on the required ports you may see a number of different symptoms. For instance, an unarchive policy fails to unarchive any files although the policy finds files matching the specified criteria or, when you attempt to open an archived file, the retrieval fails.
When examining the log_AOneBrokerService.txt file, in the ArchiveOne Broker Service startup tracing, you will see the line:
Initialising DataTransferImpl host...
Host initialisation failed. Exception : HTTP could not register URL http://+:7777/. Another application has already registered this URL with HTTP.SYS.
Another process is already using the port required by the ArchiveOne Broker Service for communication with the File Agent services.
The log file will identify the process name (in the above case HTTP.SYS) which is using the required port. If it is not clear from the log file which process has seized the port: