windows10 loop sign-in

try signing in with your adobe id, not a social account.  if that fails:

start here, https://helpx.adobe.com/manage-account/kb/troubleshoot-creative-cloud-sign-out-sign-in.html and if the first four measures fail to solve the problem do a clean reinstall:

uninstall every cc app including preferences, https://helpx.adobe.com/creative-cloud/help/uninstall-remove-app.html

then uninstall the cc desktop app, https://helpx.adobe.com/creative-cloud/help/uninstall-creative-cloud-desktop-app.html

clean your computer of cc files per http://www.adobe.com/support/contact/cscleanertool.html

restart your computer (don't skip this)

reinstall the cc desktop app using the link at the bottom of the page at https://helpx.adobe.com/uk/download-install/kb/creative-cloud-desktop-app-download.html use the desktop app to install your cc programs/trials

<moved from cc desktop bugs>

https://community.adobe.com/t5/notificationfeed/page
https://community.adobe.com/t5/download-install-discussions/re-quot-sign-in-required-quot-loop/td-p/6257463

try all this solution but not work