Could not deserialize object.

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SharePoint2010

Hello Friends,

I had created custom workflow activity to create list.It works fine but day after i open that workflow in SharePoint it shows me error Could not deserialize object.what was the problem.
If i make changes in assembly file than it work fine for that day but after next day same error display.please help me.

Posted 10-Dec-13 18:04pm

member9556688

Updated 20-Apr-16 22:54pm

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Member 11446437 · Answer 1 · 2016-04-20T22:54:00

It turned out that there were some custom workflow activities in the projects. The entries needed to be added in the web.config file. For SharePoint 2010 custom activities to work in SharePoint 2013, the "authorizedType" node needs to be defined in a new sub-section "targetFx" under the "authorizedTypes" section.