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I build an SharePoint 2013 Sandbox Event Receiver which works in my local on-prem dev environment. However, when pushing it up to my SharePoint Online tenant it does not work nor even fire at all.

I can see the event receiver attaching and detaching from my list using the SharePoint Client Browser for SharePoint 2010 and 2013 with each activation/deactivation so I know it is attaching properly.

Are there any special configurations necessary for it to work on SPOnline? Thanks

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2 Answers 2

up vote -1 down vote accepted

Sandbox solutions has been deprecated using custom code. Please check the below link http://blogs.msdn.com/b/sharepointdev/archive/2014/01/14/deprecation-of-custom-code-in-sandboxed-solutions.aspx

May be that is reason your event receiver is not working.

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It is because you have to activate two times.

Both in the solution page and the you have to go to the Feature page and activate the feature.

check this post: Why does my Event Receiver (sandboxed) not work on Sharepoint Online, but works perfect on premise


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I have activated the feature correctly. It is activated on the solution gallery AND the Site Feature Activation. –  ChiliYago Mar 9 '14 at 13:59

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