There is a bug with NOD32 antivirus and Outlook 2010 64-bit - copy-pasting with formating from any web page will cause Outlook to hang. Problem description: Copying any text from any web-browser from any web page, and trying to paste it into Outlook 2010 64-bit will cause Outlook to hang. On the first paste command, Outlook simply does nothing. Trying to paste a second time will cause Outlook to hang. Using the paste option "paste as text", Outlook will not hang. Detailed troubleshooting steps: 1) Uninstalled everything related to Office. Rebooted and installed Office 2010 Professional Plus 64-bit. Bug was intermittent - sometimes it pasted fine, but at some point during the day it would hang again. 2) The moment Outlook hanged, I opened Word 2010 and could paste with format no problems what so ever. 3) Contacted Microsoft Support, they suggested I try hotfix KB2459114. After applying the hotfix, Outlook would not hang anymore, it would simply refuse to paste (with format) anything at all from any webpage. 4) After removing the hotfix, Outlook would hang all the time, when I tried to paste with format anything from any webpage. 5) Contacted Microsoft Support again, this time I unchecked the ESET Outlook add-in from Outlook and now the bug is gone. I can paste just fine. More information: Before contacting Microsoft Support, I uninstalled NOD32 (didn't install any other AV) and Outlook still hanged. It seems NOD32 leaves behind the Outlook add-in during the uninstallation, that is why the bug remained. I'm using Windows 7 Pro 64-bit, Office 2010 64-bit and currently running NOD32 22.214.171.124 (64-bit of course). The bug has been present ever since NOD32 126.96.36.199 as far as I remember. This bug has also happened on a completely clean machine - clean installed Windows 7 64.bit, Outlook 2010, NOD32 and immediately got Outlook to hang. As far as I know, this bug is specific to 64-bit Outlook 2010. Using Windows 7 64-bit, Outlook 2010 32-bit, I haven't encountered this bug so far.