2) Go to chrome://flags/
3) Enable #same-site-by-default-cookies and #cookies-without-same-site-must-be-secure
4) Click Relaunch to restart your browser.
6) Open Google Chrome's Developer Tools (Ctrl+Shift+J, or Menu > More tools > Developer Tools).
7) Navigate to the Console tab of the Developer Tools.
8) Launch the external application and look in the developer tools Console to see if you can see an error message such as: "A cookie associated with a cross-site resource at [external application's URL] was set without the 'SameSite' attribute. It has been blocked" (see screenshot above).
10) If testing reveals problems with the external application's settings for 3rd party cookies, contact the vendor to discover their plan for resolving the issue. Record the results in the "Vendor Contacted/Aware" column of the spreadsheet.