Back in 2014 Microsoft announced that coded sandbox solutions were deprecated. As of July 29, 2016, Microsoft has disabled the activation of new or updated code sandbox solutions in SharePoint Online. This announcement comes on the tail end of a series of issues that occurred in SharePoint Online with sandbox solutions. The first issue occurred around July 22nd when there was some service degradation which continued until July 27th. Customers who have active code sandbox solutions will have approximately 30 days to migrate to the SharePoint Add-In Model, or move to client side code. The code sandbox solutions will be removed from SharePoint Online within a couple of weeks of receiving the notification in the Tenant Message Center for Office 365.

What is a code sandbox solution?

A code sandbox solution, also known as a managed code sandbox solutions, is a self contained package that contains code typically used for event receivers, workflows, web parts, feature receivers, and InfoPath forms. However, declarative sandbox solutions are still supported in SharePoint Online.

Microsoft has said in the past that SharePoint on-premise customers will not be affected by this announcement. Despite this, we still suggest migrating away from coded sandbox solutions in favor of the new Add-In Model.

Can Composable Systems help me?

Since the announcement back in 2014 Composable has been instructing clients to move away from sandbox solutions and to start adapting to the new Add-In Model. This announcement comes out of the blue for most customers and we will continue to help people migrate to the new SharePoint Add-In Model. Even if we haven’t worked with your company in the past Composable Systems is more than ready to assist you in resolving this urgent matter.

Microsoft is advising customers who have these services installed to watch the Message Center and Service Health Dashboard for details, timelines, and exception processes. We will continue to update this post as new information becomes available.

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