This message will sometimes occur during the startup of SI5 (immediately after clicking the SI5 icon to launch the application). The message window looks like the one in the image below for SI5.5 (slightly different for SI5.0-SI5.2)
Note: If you have recently upgraded from SI5.2 to SI5.5, this message could indicate that you DID NOT upgrade the LANSync Server Component first as indicated in the upgrade instructions found here – http://www.d-toolsblog.com/product-view/critical-si55-update-notice/
The message simply means that the Host/Server is currently unreachable to the client. This can be caused by several factors. Lets take a look at what some of those may be in order to assist you with troubleshooting and identifying the problem.
From the Client PC – Steps to troubleshoot:
The next window should show the DToolsV5Projects and DToolsV5Products folder. Try double-clicking either of them to see if you can access the shared folders without being prompted to log in or getting a “You do not have permission to access this folder” message.
4. If you have been able to follow these steps with out any issue, lets now move on to the LANSync Host/Server PC (physically)
From the LANSync Host/Server PC (If you run LANSync and the SI5 Client on the same machine, you can still follow these steps):
3. Also, scroll down in the same Services window and check on the SQL Server (DTOOLSV5) service and make sure that it is also started
5. If any of the services are above were stopped, start them and then try to connect from the client to the LANSync Host/Server again after you have started them
6. If you have tried all of the above and you are still experiencing this issue, please contact the support team directly by calling 866-386-6571 option 2 at the prompt, and then option 1 at the next prompt. You may also contact them via email.