I just ran into an annoying issue:

Application and Services Logs in the Windows Event Viewer

Check Application and Services Logs in the Windows Event Viewer

While trying to create an additional NAV instance on an application tier with the same settings as the DynamicsNAV110 default instance (which has been working fine for a while), attempts to start this new instance resulted in the following error:

ServerInstance ‘MicrosoftDynamicsNavServer$RetailScheduler’ failed to reach status ‘Running’ on this server due to the following error: ‘Cannot start the service.’. Additional information may be in the event log of the server.

Clue number 1: Server Event Log

First, I checked Application and Services Logs in the Windows Event Viewer.

Windows Server Event Viewer:

Microsoft – DynamicsNAV – Server – Admin

Here I found the following error message:

Server instance: YourNAVInstance
Tenant ID:
Type: Microsoft.Dynamics.Nav.Types.Exceptions.Encryption.NavEncryptionNotCreatedException
SuppressMessage: False
ContainsPersonalOrRestrictedInformation: False
DiagnosticsSuppress: False
MessageWithoutPrivateInformation: An encryption key is required to complete the request.
SuppressExceptionCreatedEvent: False
FatalityScope: None
Message: <ii>An encryption key is required to complete the request.</ii>
at Microsoft.Dynamics.Nav.Types.ServerUserSettings.LoadProperties(Object target, ConfigurationSettingsProvider provider)
at Microsoft.Dynamics.Nav.Types.ServerUserSettings.CreateInstance(ConfigurationSettingsProvider settingsProvider, ConcurrentDictionary`2 appSpecificSettings)
at Microsoft.Dynamics.Nav.WindowsServices.DynamicsNavServer.Main(String

[] args)
Source: Microsoft.Dynamics.Nav.Types
HResult: -2146233088

This brings us to Clue number 2:  Something is wrong with encryption.

Checking the Data Encryption settings, I found that there is no encryption enabled.

Data Encryption Management

Fresh out of leads, I continued troubleshooting by checking codeunits and other possibilities. Sometime later I decided to check if there are any settings in Program Files.

I started my investigation in C:\ProgramData\Microsoft\Microsoft Dynamics NAV\110\Server folder. This is a working folder where the server keeps track of instances among other things. In this folder, each instance will have its own folder such as

  • MicrosoftDynamicsNavServer$YourNavInstance.
Note that the Service component of NAV Server is located in C:\Program Files\Microsoft Dynamics NAV\110\Service; not in (x86) folder.

To my dismay, I didn’t see my new instance there. Perhaps this folder is only created once the service is started.

The “Key” to success!

As my investigation of the C:\ProgramData\Microsoft\Microsoft Dynamics NAV\110\Server\ folder continued, a folder named Keys piqued my interest.

Remember Clue number 2:  Something is wrong with encryption.

I removed this folder and restarted the service on my original instance. It failed to connect. I put the folder back and restarted the service once again. When the original service connected, I knew I was back on the trail.

Inside of the keys folder, I found a DynamicsNAV110.key file (not sure what this file does yet). I decided to make a copy of this file and rename that copy to be YourNAVInstance.key.

Started the service for YourNAVInstance and, Voila! It fired right up.

Hopefully, somebody finds my process and this information helpful. If I find anything more relating to this or what that .key file is for, will let you all know in a new post.

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