Uninstall Precursive OBX: Considerations for External Sharing

Removing the External Sharing Permission Assignment

Problem:

“I'm unable to uninstall the Precursive OBX package. I'm receiving the below errors. The Permission Set has no assigned users, so I'm not sure why I'm getting that error. Additionally, I'm not able to remove the Precursive OBX Site from Salesforce.”

 or
 

Solution:

The permission set referenced above has been assigned to the Site Guest User profile, for use with External Sharing and stored in Sites.

This profile is found in Setup > Sites under the Precursive OBX External Sharing site configured in your Org.

To remove the permission set:

1. From Setup, enter Sites in the Quick Find box, then select Sites.

2. Select the Precursive OBX Public Shares Services site configured for External Sharing.

3. Click Public Access Settings.
   

1. Next, click View Users

2. Select the Site Guest User.

3. Navigate to the Permission Set Assignment section and delete the assigned permission.
   

1. Scroll down the page to the Managed Package section and Remove Precursive OBX.

2. Go back to Sites and Deactivate the Precursive OBX force.com site.
   

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For more information: Managing Salesforce Sites

You will also have to select a different page there in the Active Site Home page lookup so it's not associated with Precursive OBX. Just select any other page.
Once that's done, you should be able to uninstall successfully.