Adding a little more info: Clicking the 'more details' link brings this up: clientIPAddress 98.110.168.57 X-ClientId: 5E5EF7A8AEF944BF96FC54BC724CE909 X-Redir-Error Ar0yJcYBXzkR6yKx2gg|Ar0yJcYB4qzj6SKx2gg|Ar0yJcYBuksW6SKx2gg|Ar0yJcYBaJJb6CKx2gg|Ar0yJcYBtlaT5yKx2gg|Ar0yJcYBMTTs5iKx2gg|Ar0yJcYBlD9F5iKx2gg|Ar0yJcYBM8185SKx2gg|Ar0yJcYBzVKv5CKx2gg|Ar0yJcYBcu3-4yKx2gg|Ar0yJcYB9zhT4yKx2gg X-FEServer MN2PR05CA0032 Date:10/18/2022 4:07:55 PM Means nothing to me but I thought maybe it might help.

You can check for issues with Total Cookie Protection. *https://support.mozilla.org/en-US/kb/total-cookie-protection-and-website-breakage-faq *https://support.mozilla.org/en-US/kb/introducing-total-cookie-protection-standard-mode If you use extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) that can block content (Adblock Plus, NoScript, DuckDuckGo PE, Disconnect, Ghostery, Privacy Badger, uBlock Origin) always make sure such extensions do not block content. *make sure your extensions and filters are updated to the latest version *https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems Firefox shows a purple shield instead of a gray shield at the left end of the location/address bar in case Enhanced Tracking Protection is blocking content. *click the shield icon for more detail and possibly disable the protection You can check the Web Console for relevant-looking messages about blocked content. *https://support.mozilla.org/en-US/kb/enhanced-tracking-protection-firefox-desktop *https://support.mozilla.org/en-US/kb/smartblock-enhanced-tracking-protection *https://support.mozilla.org/en-US/kb/trackers-and-scripts-firefox-blocks-enhanced-track <hr> You can try these steps in case of issues with webpages: You can reload webpage(s) and bypass the cache to refresh possibly outdated or corrupted files. *hold down the Shift key and left-click the Reload button *press "Ctrl + F5" or press "Ctrl + Shift + R" (Windows,Linux) *press "Command + Shift + R" (Mac) Clear the Cache and remove the Cookies for websites that cause problems via the "3-bar" Firefox menu button (Settings). "Remove the Cookies" for websites that cause problems: *Settings -> Privacy & Security<br>Cookies and Site Data: "Manage Data" "Clear the Cache": *Settings -> Privacy & Security<br>Cookies and Site Data -> Clear Data -> [X] Cached Web Content -> Clear *https://support.mozilla.org/en-US/kb/clear-cookies-and-site-data-firefox *https://support.mozilla.org/en-US/kb/how-clear-firefox-cache Start Firefox in <b>Troubleshoot Mode</b> to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if <b>hardware acceleration</b> or <b>userChrome.css</b> is causing the problem. *switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Themes *do NOT click the "Refresh Firefox" button on the Troubleshoot Mode start window *https://support.mozilla.org/en-US/kb/diagnose-firefox-issues-using-troubleshoot-mode *https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems *https://support.mozilla.org/en-US/kb/enhanced-tracking-protection-firefox-desktop *https://support.mozilla.org/en-US/kb/smartblock-enhanced-tracking-protection *https://support.mozilla.org/en-US/kb/trackers-and-scripts-firefox-blocks-enhanced-track

Clearing the cookies & site data did the trick. Closed and re-opened outlook web site and it took forever to open; after which it had me log back in again (expected). Closed firefox and restarted all and seems to stay fixed. Thanks. [only down side is that I must have slipped & deleted more than just the microsoft data; having to sign in / 2 factor everywhere; oh well]