> ## Documentation Index > Fetch the complete documentation index at: https://moengage-docs-mcp-segmentation-tool-belt.mintlify.site/llms.txt > Use this file to discover all available pages before exploring further. # Why Is an Anonymous User Profile Created with an Uninstall Event Linked to a Campaign ID? > Find out why anonymous user profiles appear with uninstall events tied to campaign IDs, and how to trace the campaign that triggered them. ## Problem An anonymous user profile is created containing only an uninstall event. It contains no actual user information and does not map to a registered profile. anonymous user.png ## Solution Perform the following steps: * Expand the uninstall event in the **Activity info** to check for campaign details. * Locate the **Campaign ID** associated with this event. campaign id.png * Search for the **Campaign ID** in the dashboard. * If the campaign was scheduled for **All Users**, it indicates that the user had uninstalled the application before the campaign could be delivered. Since MoEngage did not receive the proper uninstall callback for this user, a guest profile was created to track this uninstall event. This process ensures that the uninstall event is recorded, even without mapping it to a registered user profile.