workflow installation error - object reference not set to instance to an instance of an object

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Posted on by Community Member Microsoft Employee

Installed as below

--Win server 2008 R2
--Sql server 2012 X64
--Dynamics GP 2010 (MS-GP-2010 V-11.00.2320 HF released by March-2014)
--in gp created 2 sample companies
--enabled web services for 1 company, not configured web services management console
--installed sharepoint foundation 2010 & configured as new farm (not stand-alone)
--installed workflow, default website & default ports in domain
copied files and started windows installer and throws error
while installing workflow got error
"object reference not set to instance to an instance of an object"

Any solution please?

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Community Member Microsoft Employee on at

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RE: workflow installation error - object reference not set to instance to an instance of an object

I got the issue resolved. Instead of doing this

--installed workflow, default website & default ports in domain

I did the below

--installed workflow, website & ports in domain - assigned to web-services ports, not the default one.

Thanks Jonathan, noted your point. but i suppose the SharePoint does not allow to uninstall without uninstalling Workflow,
Jonathan Fear on at

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RE: workflow installation error - object reference not set to instance to an instance of an object

Did you recently have Workflow installed? I have seen where you uninstall SharePoint first without uninstall Workflow and then there are objects left over in the databases. There is no easy way to do a manual uninstall process for Workflow. If you are doing this on the same server as a machine that previously had it installed on (and not uninstalled correctly) you are going to need to start over on a new server or try to manually remove everything from the registry and all databases (completely not supported).