This article shows you how to sync the list of site collections and subsites in the SharePoint Essentials Toolkit.

Details

At times you will need to re-sync the sites in your Home Page Dashboard as content changes and sites are moved, reorganized and added or deleted.
The SharePoint Essentials Toolkit keeps a static copy of the site collections and subsites by default. This is to prevent constant connections to the SharePoint environment, and you are required to sync the sites 'on-demand'.
Syncing the sites will also update the Site Title, Description, Site Collection Size, List Count, Permission Inheritance setting, and Site Template Icon for each of the synced sites.
NOTE: By simply clicking on a site in the Home Page Dashboard, the Site Title, Description, Site Collection Size, List Count, Permission Inheritance setting, and Site Template Icon will automatically refresh for the selected site.

Step-by-Step Guide

The only way to automatically get all new Site Collections within the tool is by using the "Retrieve all Sites from Web Application" function.
See the steps outlined in this article to do this (Method 3). This will have the tool fetch all any new Site Collections from the Tenant/Web Application and add them into the tool.
This will not automatically remove Site Collections. If you select a site or Site Collection that does not exist in the environment, the tool will change the site icon (within the tool) to a red X, denoting it has been removed. Reports and logs will remain available for this site unless you right click and select "Delete" from the Home Page Dashboard. This removes it from the tools interface.
If fetching everything from the tenant/web application is not suitable, use the article below to use PowerShell to automatically fetch all Site Collections, and re-import the ones you need (remove the ones you do not need from the list)
- How to Add Sites to the Home Page Dashboard (Method 2, see PowerShell section)

In order to sync multiple Site Collections within the tool, you will need to use a list of the Site Collections (in MS Excel format), and use "Add Site" function.
This will not overwrite any content or lose reports or logs, it will simply re-sync the existing Site Collections and all subsites under them.
If a site or Site Collection not exist in the environment, the tool will change the site icon (within the tool) to a red X in the Home Page Dashboard, denoting it has been removed. Reports and logs will remain available for this site unless you right click and select "Delete" from the Home Page Dashboard. This removes it from the tools interface.
See these articles to get help with generating the MS Excel file, and adding using the Import function to sync the Site Collections.
- Transfer or copy the Home Page Dashboard sites to another machine (This shows you how to make a copy of the existing Site Collections in your Home Page Dashboard so you can re-import them for the sync).
- How to Add Sites to the Home Page Dashboard (Method 2)