Canmove, confirm
2,081
edits
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add another Windows Defender
*[[Thunderbird:Testing:Antivirus_Related_Performance_Issues#AVG|AVG]]
* Avira antivirus [http://forums.mozillazine.org/viewtopic.php?p=14377061#p14377061 slow Mac], [https://getsatisfaction.com/mozilla_messaging/topics/thunderbird_17_on_mac_is_slow#reply_10981651 slow Mac], [https://getsatisfaction.com/mozilla_messaging/topics/cant_compact_my_box blocks compact], [https://bugzilla.mozilla.org/show_bug.cgi?id=1425279], [https://support.mozilla.org/en-US/questions/1194726]
*Bitdefender solved by disabling BD or adding exception for Thunderbird:[https://support.mozilla.org/en-US/questions/1288875], [https://support.mozilla.org/en-US/questions/1277253 crashes Thunderbird], [https://support.mozilla.org/en-US/questions/1098049], [http://forums.mozillazine.org/viewtopic.php?f=39&t=1973177&p=10075691#p10075691], tbird_24 very slow - solved by reinstalling BD. Mail not retrieved fixed by disabling the Anti Spam feature. [https://support.mozilla.org/en-US/questions/1280635]
*BullGuard {{bug|537769}} and [http://forums.mozillazine.org/viewtopic.php?f=39&t=2007131] (see BullGuard solution below)
*Cloudmark Desktopone [http://forums.mozillazine.org/viewtopic.php?p=13221737#p13221737]
*McAfee: Main [[Thunderbird:Testing:Antivirus_Related_Performance_Issues#McAfee|McAfee topic below]] [https://support.mozilla.org/en-US/questions/1094984 McAfee Active Protection] {{bug|544684}} shutdown hang, [https://getsatisfaction.com/mozilla_messaging/topics/thunderbird_is_slow_to_launch slow startup], {{bug|1015437}} Slow getting mail
*Microsoft Security Essentials aka MSE (Settings | Excluded Files & Folders | add [https://support.mozillamessaging.com/en-US/kb/profiles#w_where-is-my-profile-stored your profile folder], typically c:\users\-your-user-name-\appdata\roaming\thunderbird **) [http://getsatisfaction.com/mozilla_messaging/topics/thunderbird_very_slow_with_microsoft_security_essentials?utm_content=reply_link&utm_medium=email&utm_source=reply_notification#reply_12390513] [https://getsatisfaction.com/mozilla_messaging/topics/thunderbird_slow-yvp58] [http://groups.google.com/group/mozilla.support.thunderbird/browse_thread/thread/93ab6d849bd87918] [http://groups.google.com/group/mozilla.support.thunderbird/browse_thread/thread/84767c1397f8d560/d2ec367b9d781522?lnk=raot] [https://getsatisfaction.com/mozilla_messaging/topics/thunderbird_very_slow_with_microsoft_security_essentials] [https://getsatisfaction.com/mozilla_messaging/topics/thunderbird_very_slow_on_one_system_and_fast_on_another] [https://support.mozilla.org/en-US/questions/1289514] {{Bug|621083}} [https://bugzilla.mozilla.org/show_bug.cgi?id=839908#c7 Bug 839908]
* Microsoft Windows Defender aka "Antimalware Service Executable" (ASE) aka MsMpEng.exe [http://answers.microsoft.com/en-us/protect/wiki/protect_defender-protect_scanning/how-to-exclude-a-filefolder-from-windows-defender/f32ee18f-a012-4f02-8611-0737570e8eee how to exclude Thunderbird] User reports of slowness fixed by creating an exclusion for the Thunderbird profile folder.[https://support.mozilla.org/en-US/questions/1355808#answer-1461964], [https://bugzilla.mozilla.org/show_bug.cgi?id=1208116#c5], [https://support.mozilla.org/en-US/questions/1067704], [https://support.mozilla.org/en-US/questions/1152667], [https://support.mozilla.org/en-US/questions/1013191], [https://superuser.com/questions/1324436/system-slow-unresponsive-when-thunderbird-is-receiving-emails-with-windows-defen], [https://support.mozilla.org/en-US/questions/1285317], {{bug|1441918}} (Firefox), {{bug|1640725}}, [https://www.reddit.com/r/Thunderbird/comments/mbspvh/comment/ihbx4lb/?utm_source=reddit&utm_medium=web2x&context=3]
*Panda Cloud Anti Virus Free v 2. Installed but it interfered with sending emails. Thunderbird v 24.3.0 said it could not access the temp directory although the outgoing emails were there. Thus the mail was not sent. No apparent tweaks worked. When Panda uninstalled, Thunderbird was back to normal.
*pctools internet security 2011 {{bug|610106}}
