Initial push/sync errors: GRPC failed to connect to all addresses

We have received several customer reports that the prerequisite checks succeeded when trying to connect to Cloud, but the initial push fails afterward due to connection issues to all addresses. See an example error below.

ERROR:

2022-05-03 10:54:21,935 [145] ERROR [InstallationDataManager] Error sending installation data to Cloud: InstallationDataManager => sending installation data failed: Status(StatusCode="Unavailable", Detail="failed to connect to all addresses", DebugException="Grpc.Core.Internal.CoreErrorDetailException: {"created":"@1651596861.940000000","description":"Failed to pick subchannel","file":"..\..\..\src\core\ext\filters\client_channel\client_channel.cc","file_line":3187,"referenced_errors":[{"created":"@1651596861.940000000","description":"failed to connect to all addresses"...

The error can be found in:

Program Files (x86)\Lansweeper\Service\Errorlog.txt
Program Files (x86)\Lansweeper\Service\sync_errorlog.txt

Our developers are still investigating the issue. The first findings do indicate that Firewall SSL inspection or SSL decryption could be causing the issue.

As a workaround, we suggest disabling SSL decryption of your firewall or adding a custom policy to not decrypt traffic to our URL endpoints.

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