Skipping the uninstall step because the SharePoint Add-in is in an invalid state and cannot be uninstalled error in SharePoint hosted add-in

This SharePoint tutorial, we will discuss how to solve the error: Error occurred in deployment step ‘Install SharePoint Add-in’: 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. Skipping the uninstall step because the SharePoint Add-in is in an invalid state and cannot be uninstalled.

Recently while working on a SharePoint hosted add-in I got the error.

Error occurred in deployment step ‘Install SharePoint Add-in’: 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.

The full error looks like below:

Skipping the uninstall step because the SharePoint Add-in is in an invalid state and cannot be uninstalled

We can change the version number to solve the issue. Here I have changed the version number to 1.0.0.1.

We can change the Version number in the AppManifest.xml file like below:

Then I tried deploying from visual studio and it worked fine for me.

Another approach is that you can remove uninstall the app using PowerShell.

$instances = Get-SPAppInstance -Web “UR Site URL”
$instance = $instances | where {$_.Title -eq ‘Name of the App’}
Uninstall-SPAppInstance -Identity $instance

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Hope this will be helpful to resolve Skipping the uninstall step because the SharePoint Add-in is in an invalid state and cannot be uninstalled