The logic is now that there is a `Service` registry key that is locked down and used to communicate with the service. The service will refuse to use the key if it does not have the correct permissions.
Another key, `InstallState` is user readable and is used to keep track of what is installed with the MSI, and also communicates back if the initial password was applied.
* Improved Windows Eventlog support.
Added support for logging to a different log with a Log:Source format.
Backwards compatible by treating "Source" as "Application:Source", where "Source" is default "Duplicati".
* Changed default log-level for eventlog to `Warning`.
This fixes#5770
* Fixed issue where checking for event log would crash the process.
Changed default log to `Duplicati` (was `Application`).
New default source names for service, agent and server.
* Reverted windows log-level back to information, now that there is a separate log for it
* Using "Duplicati 2" as the log name because "Duplicati" may be registered as a source name.
* Attempt to stop service before uninstalling
* Added additional diagnostics messages
* Fixed bug with starting the agent as a service
* Default to not use WindowsService for Agent as it requires permissions to create the event log
* Reduced log message levels for ongoing communication in agent
* Prevent double-logging from agent into Windows EventLog
* Made the agent log under a separate log source name
Kenneth Skovhede