Sunday, January 31, 2016

A different version of this App is already installed with the same version number. You need to delete the app from the site and the site recycle bin to install this version.

Environment: Office365, SharePoint Online, Visual Studio 2015

Requirement: Re-Deploy an SharePoint Add-in into SharePoint Online Developer site

Approach: The Add-in is build successfully, but was getting an error when it is deployed using Visual Studio or added to Apps list in Developer site.

Issue/Error: A different version of this App is already installed with the same version number.  You need to delete the app from the site and the site recycle bin to install this version.

Resolution: We could not delete the app as it was neither in site recycle bin nor second-stage recycle bin. Clean and Retract the app from Visual Studio. Redeploy it again after successful retraction.

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