Impossible to connect to SharePoint 2010 on Windows 2008 R2

Recently, one of my clients reported an issue where they were not able to access their SharePoint 2010 on Windows Server 2008 R2. It was really interesting that only some users were affected and it’s turned out that it wasn’t working just for local members of local “Administrators” group.

In short, there was an issue with a Microsoft update KB4480970 released on January 8, 2019 and then 3 days later Microsoft release a fix for it KB4487345.

Reminder: SharePoint 2010 is out of extended support soon