When people are running Salesforce on a browser with third-party cookie checking enabled, Salesforce displays this error message: **We can't display this page because your browser blocks cross-domain cookies. Try again with a different supported browser.** I filed Bug #1710703 to request that someone from Mozilla reach out to Salesforce to get them to change this error message to something more useful, that tells the user about cross-domain cookie settings, and points them to a page like https://help.salesforce.com/articleView?id=sf.pages_browser_security_settings.htm&type=5 If this error message becomes more prevalent, we might want to send a communication to CAs about it.
Bug 1712018 Comment 0 Edit History
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When people are running Salesforce on a browser with third-party cookie checking enabled, Salesforce displays this error message: **We can't display this page because your browser blocks cross-domain cookies. Try again with a different supported browser.** If you run into this error in the CCADB there is no need to change browsers. Making one of the following changes should resolve the error in your browser: * Add the servers *.salesforce.com, *.force.com, and *.visualforce.com to your browser's cookies exception list * Configure P3P for your browser * Change your browser settings to allow third-party cookies Reference: https://help.salesforce.com/articleView?id=sf.pages_browser_security_settings.htm&type=5 We should check that Lightning has the correct Cookies settings * Test in browsers that are blocking third-party cookies * Salesforce recommendations regarding cookies (SameSite=None; Secure): https://releasenotes.docs.salesforce.com/en-us/spring20/release-notes/rn_general_chrome_samesite.htm Related: Bug #1620104