Unable to sync Application Manager in an instanceIssue Application Manager is not synching with store repository after patching or instance upgrade, which can cause issues with application updates and installations. Symptoms The "Available for you", "Update", and "Installed" sections will not display the corresponding counts, indicating that this information is not currently accessible. However, by clicking on the "Sync now" button, the system will initiate a synchronization process with the ServiceNow repository. Despite this, it is important to note that new store applications, updates, and installed information will not be available immediately after synchronization. Release Yokohama or Zurich Cause The Application system properties may be corrupted with invalid information, which can lead to unexpected behavior and errors within the system. Resolution 1. Query the following properties from the sys_properties table and set their values to blank. If any of these properties do not currently exist, please create them and set their values to blank. sn_appclient.upload_base_urlsn_appauthor.upload_base_urlsn_appclient.dev_repository_base_urlsn_appclient.repository_base_url2. Ensure that the property sn_appclient.repository_base_url is set to https://fedappstore.servicenowservices.com/ and then proceed to run the update checker to ensure that any necessary updates are applied.3. To synchronize the instance, please run the following background script on the instance under the sn_appclient scope. This script will check for any available updates and apply them as necessary to resolve the Application Manager sync issue.new UpdateChecker().checkAvailableUpdates(); This should resolve the instance Application Manager sync issue by ensuring that all necessary properties are properly configured and that any available updates are applied.