Make sure it is fully removed. The Windows uninstaller seems to leave behind a database instance name and some folders.
I deleted the entire MS SQL directory with every file and folder removed. Still getting the error
12/19/2017 2:11:14 AM Error An error occurred: 'Error authenticating user, service is down'. Error details: at VideoOS.Server.Admin.Utilities.IisHelper.ValidateWebService(AccountInfo account, String atServer, Int32 atServerPort, String websiteId)
at VideoOS.Server.Admin.Utilities.ServerUtilities.SetWebServiceAccount(AccountInfo serviceAccount, String serverAddress, Int32 serverPort, String websiteId)
at VideoOS.Installer.ServerConfiguratorPlugin.ServerConfigurator.RunInstall()
at VideoOS.Installer.ServerConfiguratorPlugin.ConfigurationTaskInstall.DoRun()
12/19/2017 2:11:14 AM Information Last error: {0}
12/19/2017 2:11:14 AM Error An error occurred: 'Could not configure the server. See the log file for more information.'. Error details: at VideoOS.Installer.ServerConfiguratorPlugin.ConfigurationTaskInstall.DoRun()
at VideoOS.SoftwareManager.Core.Task.Task.Start()
12/19/2017 2:11:14 AM Error An error occurred: 'Error authenticating user, service is down'. Error details: at VideoOS.Server.Admin.Utilities.IisHelper.ValidateWebService(AccountInfo account, String atServer, Int32 atServerPort, String websiteId)
at VideoOS.Server.Admin.Utilities.ServerUtilities.SetWebServiceAccount(AccountInfo serviceAccount, String serverAddress, Int32 serverPort, String websiteId)
at VideoOS.Installer.ServerConfiguratorPlugin.ServerConfigurator.RunInstall()
at VideoOS.Installer.ServerConfiguratorPlugin.ConfigurationTaskInstall.DoRun()
12/19/2017 2:11:14 AM Error Install failed.VideoOS.Installer.Sequencer.ErrorHandling.InstallerSequencerException: Could not configure the server. See the log file for more information. ---> VideoOS.Server.Admin.ServerAdminException: Error authenticating user, service is down
at VideoOS.Server.Admin.Utilities.IisHelper.ValidateWebService(AccountInfo account, String atServer, Int32 atServerPort, String websiteId)
at VideoOS.Server.Admin.Utilities.ServerUtilities.SetWebServiceAccount(AccountInfo serviceAccount, String serverAddress, Int32 serverPort, String websiteId)
at VideoOS.Installer.ServerConfiguratorPlugin.ServerConfigurator.RunInstall()
at VideoOS.Installer.ServerConfiguratorPlugin.ConfigurationTaskInstall.DoRun()
--- End of inner exception stack trace ---
Server stack trace:
at VideoOS.Installer.Sequencer.SequenceManager.Install()
at System.Runtime.Remoting.Messaging.StackBuilderSink._PrivateProcessMessage(IntPtr md, Object[] args, Object server, Object[]& outArgs)
at System.Runtime.Remoting.Messaging.StackBuilderSink.AsyncProcessMessage(IMessage msg, IMessageSink replySink)
Exception rethrown at [0]:
at System.Runtime.Remoting.Proxies.RealProxy.EndInvokeHelper(Message reqMsg, Boolean bProxyCase)
at System.Runtime.Remoting.Proxies.RemotingProxy.Invoke(Object NotUsed, MessageData& msgData)
at VideoOS.Installer.Sequencer.SequenceManager.BeginInstallDelegate.EndInvoke(IAsyncResult result)
at VideoOS.Installer.UI.WizardPageInstall.InstallationEnded(IAsyncResult ar)