Forum Discussion
Chrome "400 Request Too Long" when navigating to profile
Last week I started noticing that in Chrome our people search web parts were intermittently not showing user's profile pictures, and that clicking on the link to their Delve profile would result in a...
You need to delete cookies for the related domains (related to *.live, *.microsoft, *.sharepoint). Chrome isn't handling cookie storage well and this has long been a problem -- it is not SPO-specific (e.g. happens with Microsoft Accounts on MSDN/TN forums).
Long discussion about "bad cookies" here: https://techcommunity.microsoft.com/t5/Admin-Center/Bad-cookies-and-the-Office-365-Admin-Center-and-the-Compliance/m-p/35095#M340