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Dynamics 365 Community / Forums / Microsoft Dynamics AX (Archived) / AOS Crash dump analysi...
Microsoft Dynamics AX (Archived)

AOS Crash dump analysis - Symbols

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Posted on by Community Member Microsoft Employee

Dear all,

Now that the LCS tool to analyze crash dumps has been discontinued, we are trying to analyze them using WinDbg.

I am capturing crash dumps with WER and then trying to analyze them in WinDbg.

My issue is that the symbols are not loaded and I therefore cannot extract useful information from the dump file. I also have the same behaviour when trying to analyze the dump file with DebugDiag.

I have tried several things:

- Using MS symbol path

- Adding the AOS folder

- Used Tariq Bell's scripts

But none of those work.

Did any of you experience the same difficulties?

We have AX 2012 R2 CU7.

Thanks,

Julien

*This post is locked for comments

  • Verified answer
    Community Member Profile Picture
    Community Member Microsoft Employee on at
    RE: AOS Crash dump analysis - Symbols

    Hello,

    We have installed the latest kernel in production last week and I am now able to analyze the dumps successfully.

    Thanks for your help guys,

    Julien

  • Vilmos Kintera Profile Picture
    Vilmos Kintera 46,149 on at
    RE: AOS Crash dump analysis - Symbols

    Thanks, keep us posted. In the meanwhile since now the LCS crash dump analysis is not available I am thinking of publishing a Crash troubleshooting guide blog entry later this week based on Tariq's articles, and see how it goes and what could be extracted. Will link it once completed.

  • Community Member Profile Picture
    Community Member Microsoft Employee on at
    RE: AOS Crash dump analysis - Symbols

    Hi Martin, Vilmos,

    After speaking to MS support, it looks like the symbols are not available for older kernel versions. I will keep you updated once I install the latest kernel update in our environments in the next couple of months.

    Thanks,

    Julien

  • Community Member Profile Picture
    Community Member Microsoft Employee on at
    RE: AOS Crash dump analysis - Symbols

    Hi Martin,

    I am still getting this 404 error.

  • Martin Dráb Profile Picture
    Martin Dráb 230,235 Most Valuable Professional on at
    RE: AOS Crash dump analysis - Symbols

    Does it mean that the previous error disappeared, or that you're still getting 404 but only for Ax32Serv assembly?

  • Community Member Profile Picture
    Community Member Microsoft Employee on at
    RE: AOS Crash dump analysis - Symbols

    Thanks Martin.

    The link is working fine in a WebBrowser and it is loading the symbols (but not the Ax32Serv one) successfully with the following command:

    .reload /f

  • Martin Dráb Profile Picture
    Martin Dráb 230,235 Most Valuable Professional on at
    RE: AOS Crash dump analysis - Symbols

    Try to open the link in browser; you should see the Microsoft Symbol Server web page.

    Make sure you're connected to internet and the connection isn't blocked by a firewall.

  • Community Member Profile Picture
    Community Member Microsoft Employee on at
    RE: AOS Crash dump analysis - Symbols

    Hi Martin,

    Thanks for your reply.

    I have followed all the steps in this blog but am getting the following issue when reloading the symbols:

    WinDbg.PNG

  • Martin Dráb Profile Picture
    Martin Dráb 230,235 Most Valuable Professional on at
    RE: AOS Crash dump analysis - Symbols

    Getting symbols for AX from Microsoft symbol server worked for me, when I used it in past. Review if your setup is correct.

    As far as I remember, the AOS folder doesn't contain any symbols, so it won't help.

    If you mean scripts provided in Finding the AX user and the X++ call stack from a memory dump the easy way, they assume you've completed the setup documented in Setting up WinDbg and Using Symbols, which also uses Microsoft symbol server. You really have to fix the problem you have with the symbol server.

  • Community Member Profile Picture
    Community Member Microsoft Employee on at
    RE: AOS Crash dump analysis - Symbols

    Hi Vilmos,

    Thanks a lot for your answer.

    Yes, very disappointing as well about the tool being discontinued.

    I will check with MS to try to get those dumps analysed.

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