Appian SharePoint Plug-ins shows this error even though all web services validat

In your registry, make sure authenticated users are added to the permissions of HKEY_LOCAL_MACHINE\\System\\CurrentControlSet\\Services\\Eventlog and HKEY_LOCAL_MACHINE\\System\\CurrentControlSet\\Services\\Eventlog\\Security

Also take a look at
stackoverflow.com/.../system-security-securityexception-when-writing-to-event-log

Aleksi, could please provide justification why SharePoint module accessing windows log, Our SharePoint team seems this as risk to making changes to windows security log changes in registry for everyone. Do we have any other alternatives?

According to Microsoft, Windows logs are one of the locations that Sharepoint writes events to:
msdn.microsoft.com/.../gg193966(v=office.14).aspx

You shouldn't have to make these changes for everyone, just the Sharepoint server

This setting already enabled at SharePoint server level. still the issue is not resolved. What we have done was (1) Assign SP admin in share point application global pool, SP admin is part of windows administrator group. Both event-log and security registry entries Administrator grouped assigned and having full permission. The SharePoint integration documentation is not clear what settings we need to do? Please suggest?

One more things.. other application and sites in this site creating lot of logs in Application event log, please help us step by step what needs to be configured to resolve this security issue?