Re: [WinServer2012R2Upd3 x64] WU error 80073701...
That was helpful. Thank you. Please try the following. You can turn off the automatic installation until we resolve your issue. Your choice.
Remove Update Manually
1. Right-click on the Start button and select Command Prompt (Admin)
2. When command prompt opens, Copy (Ctrl+C) and Paste (Right-click > Paste) the following command into it, then press Enter
wusa /uninstall /KB:2894856
3. Let me know if it says it was successful or if there are any errors. If nothing appears to happen then something was likely typed incorrectly.