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Microsoft Dynamics 365 | Integration, Dataverse...
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Workflow process instance viewer showing 'NullReferenceException'

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Posted on 30 Jan 2025 08:39:04 by 202
Hi,
 
we get this error (see screenshot) whenever we open up the process instance view of any workflow.
 
It occurs for all workflows, but not dialogs. The workflow itself seems to have run just fine, it's just the instance viewer that's throwing an error.
 
It also only happens in our production environment, the test- and dev-environments are fine.
 
Has anybody an idea what might be wrong?
 
Error:
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  • Verified answer
    KaiHartmann1981 Profile Picture
    KaiHartmann1981 202 on 05 Feb 2025 at 10:28:25
    Workflow process instance viewer showing 'NullReferenceException'
    Seems to have been a temporary issue. Currently we can view all process instance details again. 
     
    My stomach tells me, that this might be an issue we have to deal with in the cloud now occasionally?
     
    If anybody else has or had this problem, please comment. For now we'll set this aside (until we face it again)...
  • Adis Profile Picture
    Adis 2,731 Super User 2025 Season 1 on 30 Jan 2025 at 10:21:36
    Workflow process instance viewer showing 'NullReferenceException'
    Hello,
     
    Unless you have a custom code, which I doubt, I would suggest a MS ticket, so that they can plan a fix for all users.
     
    Kind regards, Adis
     

    If this helped, please mark it as "Verified" for others facing the same issue

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