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altanis's avatar
altanis
Copper Contributor
Oct 14, 2019

Unable to update/uninstall/upgrade WAC 1809

I have WAC 1809 (V1.1.28771.0) installed on Server 2019.

 

It is not possible to uninstall/upgrade to a new WAC version. I always get the error message:

 

1: Ausnahmefehler: System. NullReferenceException

Der Objektverweis wurde nicht auf eine Objektinstanz festgelegt.

 

Server 2019 is fully patched. While checking Updates, I noticed that there are multiple reports of "successful installation of WAC 1809.5.1"

 

See attached screenshots

 

  • Jeff Woolslayer's avatar
    Jeff Woolslayer
    Icon for Microsoft rankMicrosoft
    Oct 14, 2019

    altanis IT will help to know how are you initiating this. Do you also get the error when uninstalling from the App & Features settings? What happens when you trying to install the current GA (1904.1) or Preview (1909)?

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