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Windows Defender: Update KB4052623 (Jan. 19, 2018)
Windows Defender has not been updated since December 25, 2018 on that machine (well, I doesn't use it on a daily base). The Defender update search, I triggered, fails with the Defender update error -2147012867. I converted the decimal value to a hexadecimal error code (0x80072EFD).
Error code 0x80072EFD helped, because I wrote in 2016 the German blog post Windows Update-Fehler 0x80072EFD and in Summer 2018 the blog post Windows 7 Defender won't receive updates (June 2018). Error 0x80072EFD simply stands for ERROR_INTERNET_CANNOT_CONNECT, the server connection could not be established.
I also found on this site -us/topic/update-for-microsoft-defender-antimalware-platform-kb4052623-92e21611-8cf1-8e0e-56d6-561a07d144ccthat Applocker could lead to this problem, if activated. But on my hyper-v server applocker isn't activated.
2ff7e9595c
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