We had this scenario were had new update of a partner addon that we should implement in the production environment. Before the implementation we had done a couple of tests to verify that the addon was working. But on the day we put update in the production environment the NST (NAV Service Tier) started to crash after 1,5h and continued to crash every five minutes. It was really bad, we had no clue about what was causing this except that it must come from the update. It was actually so bad that we decided to do a rollback by restoring a SQL backup.
When we looked in the eventviewer and we found three event that tells us about the crash.
The first one says:
Faulting application name: Microsoft.Dynamics.Nav.Server.exe, version: 8.0.38457.0, time stamp: 0x5452bd3b
Faulting module name: unknown, version: 0.0.0.0, time stamp: 0x00000000
Exception code: 0xc00000fd
Fault offset: 0x00007ffbcab200d7
Faulting process id: 0x31bc
Faulting application start time: 0x01d0a33d1cface2b
Faulting application path: C:\Program Files\Microsoft Dynamics NAV\80\Service\Microsoft.Dynamics.Nav.Server.exe
Faulting module path: unknown
Report Id: a4e43f71-0f30-11e5-80c8-0050569da38d
Faulting package full name:
Faulting package-relative application ID:
The second and the third message from the source “Windows Error Reporting” gave the error message:
Fault bucket , type 0
Event Name: CLR20r3
Response: Not available
Cab Id: 0
Problem signature:
P1: Microsoft.Dynamics.Nav.Server
P2: 8.0.38457.0
P3: 5452bd3b
P4: RecordXXXXX
P5: 0.0.0.0
P6: 5577c927
P7: 4
P8: 0
P9: System.StackOverflowException
P10:
Attached files:
These files may be available here:
C:\ProgramData\Microsoft\Windows\WER\ReportQueue\AppCrash_Microsoft.Dynami_XXXX
Analysis symbol:
Rechecking for solution: 0
Report Id: a4e43f71-0f30-11e5-80c8-0050569da38d
Report Status: 4100
The interesting part of this message is P4 and P9. Here we can see that error appears in recordXXXXX and that it is a System.StackOverflowException.
System.StackOverflowException is: “The exception that is thrown when the execution stack overflows because it contains too many nested method calls. This class cannot be inherited.”
After a lot of more testing we finally found the error. The reason was that we had a loop of infinity. We had function1 that called a function2 that in its turn called function1. A loop that never stops. This code was originally run from a OnValidate trigger in recordXXXXX. So to summarize this, look for a loop of infinity in the object that was stated in P4.
I hope this help you solve the problem. Good luck!
NAVfreak 