1) Configure the KeepAlive service without a Windows username and password in the configuration file (C:\Program Files\TIBCO\Spotfire Web Player\7.0.0\webroot\bin\Tools\Spotfire.Dxp.Web.KeepAlive.exe.config).
<setting name="WindowsUserName" serializeAs="String">
<value></value>
</setting>
<setting name="WindowsPassword" serializeAs="String">
<value></value>
</setting>
2) Open the properties window of 'TIBCO Spotfire Web Player Keep Alive Service' by right clicking on this server in Windows Services.
3) In the service properties dialog, on the 'Log On' tab, change the 'Logon' user to the service account that you are running the TIBCO Spotfire Web Player Application Pool as (seen here: IIS > Connections > Application Pools > "TIBCO Spotfire Web Player 7.0.0 Pool" > Advanced Settings > Process Model > Identity ).
4) Restart the TIBCO Spotfire Web Player Keep Alive Service.