The machine '**unspecified**' not reachable - ArcGIS Server 10.6.1 Log

[JayateerthDeshpande]

Hi,

I have a ArcGIS Server 10.6.1 setup on Windows server 2012 64 bit. Some times in a day, we gate ARcGIS Server log as "The machine '**unspecified**' was not reachable while performing this operation. The server machine will be notified of this change when it comes back online. If ArcGIS Server is going to continue to be unavailable, remove the machine from the site."

I am not able to understand what is happening at the Site level.. HAs any one faced same issue? if Solved how?

[MarkChilcott]

Hi Peoples,

We have a multi-machine site and see this message.  If we publish, or even start a service, it is followed by the synchronization of the site.

The server machine '**unspecified**' is synchronizing with the site. This will take a few minutes and during this operation all administrative operations will be blocked.

Which causes one of the machines to restart all the services.  Many times it causes the machine to crash.

I know Justin is working through this issue - anyone else got solutions?

Cheers,

Mark