Looking for logging into the Sharepoint Prompt Keeps Popping Up site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Sharepoint Prompt Keeps Popping Up site. After that you can login as usual with your login credentials.
https://social.technet.microsoft.com/Forums/ie/en-US/ba80a79d-8269-4271-a6a3-40cdee0b8964/sharepoint-site-keeps-asking-for-credentials?forum=sharepointgeneralprevious
https://answers.microsoft.com/en-us/msoffice/forum/all/sign-in-to-sharepoint-site-keeps-popping-up/cba0a6b7-205f-4f02-9d7d-a0e05721cc1c
https://sharepoint.stackexchange.com/questions/231409/sharepoint-intranet-keeps-asking-for-credentials-for-some-users
https://stackoverflow.com/questions/2107707/log-in-box-keeps-popping-up-in-sharepoint
https://community.spiceworks.com/how_to/3933-that-annoying-sharepoint-popup
https://www.c5insight.com/Resources/Blog/tabid/148/entryid/337/Tips-to-Avoid-Login-Prompts-in-SharePoint.aspx
https://kb.intermedia.net/article/1668
https://its.uiowa.edu/support/article/102673
https://sharepointsolutions.blogspot.com/2008/06/how-do-i-make-our-sharepoint-site-stop_17.html
https://dimuthublog.wordpress.com/2012/03/25/issue-login-to-sharepoint-2010-site-login-prompt-keeps-prompting-3-times/
https://support.onenet.co.nz/hc/en-gb/articles/205167325-How-do-I-stop-SharePoint-from-prompting-for-my-credentials-
https://www.eimagine.com/help-sharepoint-keeps-prompting-for-credentials/
http://support.sherweb.com/Faqs/Show/how-to-to-disable-the-password-prompt-in-sharepoint-2013