Troubleshooting steps for a failed client installation.

Your client does not update within 15 minutes after installing a new version on the server. Lights-Out displays the old version number with a warning symbol:

1. Reboot your client machine and wait until it's online again. If the Console still shows the old version number or an update in progress, proceed with step 2.
2. On your client computer open \\Server\Lights-Out. This folder contains the client installer LightsOutClientInstaller.exe. Double click to start the installation.
3. Should the installation fail with a error message like "Error reading from file: ...OFFLINE..\NLog.dll" then open explorer, change folder options to show hidden files and folder, then navigate to the path shown in the error message.

The number in curly braces my vary on your system. Typically you find a path like 

C:\ProgramData\{XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX} on Windows Vista/7
C:\Documents and Settings\All Users\Application Data\{XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX} on Windows XP

Verify that the folder in curly braces is empty, except one sub folder called OFFLINE, remove that folder (the XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX with curly braces). 

Then repeat step 2. 

During the server discovery process, no server is found and the list remains empty: 

1. Open Control Panel -> Network and Sharing Center. 

Verify, that you have a private or domain network, not a public network! 

2. Continue with server troubleshooting.

Error messages and trouble shooting