canmove, Confirmed users
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(Updated BitDefender) |
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My Antivirus software has been working great. Thunderbird is the only program that is affected. I even tried disabling my antivirus software. | My Antivirus software has been working great. Thunderbird is the only program that is affected. I even tried disabling my antivirus software. | ||
{{Warning|Your antivirus software probably worked great for | {{Warning|Your antivirus software probably worked great for months or years, across many previous versions of Thunderbird. But this is NO guarantee it is working correctly now. Antivirus and Thunderbird have a complex relationship, and that relationship can be broken by updates or version changes of <u>either</u> software. Yes even if Thunderbird is the only software affected, even if your AV version did not change. AV vendors don't always play nice, and don't always adapt their software to new versions of other software on your computer, whether you know it or not they do make accommodations under the hood for how they interact with other software. In short, if TB performance is good when AV software has been disabled, doesn't make this fundamentally a bug in Thunderbird, although there are certainly areas of Thunderbird performance that can be improved. | ||
= First Steps = | = First Steps = | ||
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'''A quick way to test the impact of antivirus software is to [http://bit.ly/1MU6eMa start Windows in safe mode], or [https://support.apple.com/en-us/HT201262 start Mac in safe mode].''' If problem is gone with operating system in safe mode, then the cause can be antivirus or some other software loading during the OS startup. | '''A quick way to test the impact of antivirus software is to [http://bit.ly/1MU6eMa start Windows in safe mode], or [https://support.apple.com/en-us/HT201262 start Mac in safe mode].''' If problem is gone with operating system in safe mode, then the cause can be antivirus or some other software loading during the OS startup. | ||
'''*NOTE, disabling antivirus using AV settings has proven over the years to not be a perfect or sufficient test. Sometimes setting changes | '''*NOTE, disabling antivirus using AV settings has proven over the years to not be a perfect or sufficient test. Sometimes AV setting changes do what they should, but often it does not. Therefore the only test that can be fully trusted is OS safe mode.''' | ||
'''*NOTE, if you altered the Thunderbird file locations (Thunderbird profile location or mail folders) then you MUST change your antivirus software to exclude these nonstandard locations.''' | '''*NOTE, if you altered the Thunderbird file locations (Thunderbird profile location or mail folders) then you MUST change your antivirus software to exclude these nonstandard locations.''' |