Symptom: User experiencing this error dialog when using navigation lists, but can happen in other areas of Dynamics GP
Cause and solutions:
This error is caused by the client machine that is running Dynamics GP loosing network connection at some point during the Dynamics GP session. Dynamics GP holds some long lived connections, especially where temp tables are in use (for example in navigation lists). Indeed it is necessary for GP to keep the connection alive or the temp table will be reclaimed by SQL server as soon as the last connection to it drops. It may also be that you see an associated error similar to the following, with a random looking numeric table name for the global temp table. This is the result of the connection loss.
SQL Server, Invalid object name ‘##293343’
There can be many root causes for a SQL connection to be lost in action. Network infrastructure failures, due to cabling faults in RJ45 connectors, network cards, when the kicks the cables under desk intermittent errors, or someone re-patching live network cabling, network cards starting to fail due to wear and tear etc. These hardware related issues used to cause us issues many years ago, but with a better infrastructure, in recent years it has been software issues in the shape of “sleep settings”. Perhaps there is a poor wifi bridge or similar weak network infrastructure that needs attention, as every time someone starts the microwave in the canteen the wifi drops… – you get the idea, so much to investigate.
The server being rebooted, or SQL server tier being torn down while the user is using GP can also result in the same error.
The advanced settings of the network card can present various settings, including allowing the operating system to put the network card to sleep, supposed power efficiency? The machine OS sleep settings may be putting the machine into sleep or hibernate after a certain period of time, there may be BIOS settings too.
Users who take long lunches, or leave machines on overnight with GP logged in will more than likely get caught out by sleep settings. When the machines are left inactive they go to sleep loosing the SQL connection and resulting in the above error. I’ve seen more of this since we moved the estate to Windows 10, I don’t think I can draw any real conclusions from that though. I have also experienced users putting their machines to sleep when going for lunch or overnight, manually from the start menu. For this reason Active Directory Group Policy has been created and rolled out to lock down such settings for the GP users.
Although not personally experienced, I have read that this may also be that the ODBC connection settings not being set up correctly. For Dynamics GP, uncheck “Use ANSI quoted identifiers” and “Use ANSI nulls, paddings and warnings”, Uncheck “Perform translation for character data” in the ODBC settings.
See: How To Create An ODBC For Microsoft Dynamics GP 2010 which is applicable for all versions of GP.
Hopefully this has been useful to you – let me know if it has with a comment – motivates me to write more!