Windows Defender crashing Calibre! Help!
I'm running Windows 64 bit Vista and just completed a Definition Update for Windows Defender (KB915597). Now every time I try to run Calibre (0.8.7) Windows Defender causes Calibre to stop working. I've tried several fixes to no avail, and Windows does not allow this update to be uninstalled. Any suggestions? I'm lost without my Calibre!
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