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Thunderbird:Testing:Antivirus Related Performance Issues: Difference between revisions
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Thunderbird:Testing:Antivirus Related Performance Issues (view source)
Revision as of 19:41, 4 January 2016
, 4 January 2016simplify Avast headings, intro
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'''This article is not just about performance issues.''' | '''This article is not just about performance issues.''' Antivirus software can also [[Thunderbird:Testing:Antivirus_Related_Performance_Issues#symptoms|cause bad or incorrect behavior, and crashes - consistently or randomly]]. | ||
<br><br>The information here is anecdotal, that is users like you giving their personal experiences. We do not have an organized battery of testing. So if you have a problem with antivirus software that is not listed here, please help other users by adding your own experience to the list. (create a wiki account, and select edit). | |||
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= Symptoms = | = Symptoms = | ||
Possible symptoms: | Possible symptoms, which can be consistent or random: | ||
* Mild to severe performance | * Mild to severe poor performance | ||
* Not able to get new mail | * Not able to get new mail | ||
* OS hangs | * OS hangs or crashes | ||
Including but not limited to doing the following: | Including but not limited to doing the following: | ||
| Line 37: | Line 37: | ||
* Replying to a message / Sending a message | * Replying to a message / Sending a message | ||
* Displaying a message | * Displaying a message | ||
* Images not displaying. [http://getsatisfaction.com/mozilla_messaging/topics/what_happened_to_progress_with_new_versions_going_backward#reply_3328214 | * Images not displaying. <small>[http://getsatisfaction.com/mozilla_messaging/topics/what_happened_to_progress_with_new_versions_going_backward#reply_3328214 AV blocks images in HTML emails] and sometimes [http://getsatisfaction.com/mozilla_messaging/topics/what_happened_to_progress_with_new_versions_going_backward#reply_3328214 malware installs bogus Proxies which block or slow internet connections like sending and receiving email, images in email and web browsing]</small> | ||
* Thunderbird | * Starting Thunderbird | ||
{{Warning|Your AV software probably | {{Warning|Your AV software has probably worked great for ages in previous versions of Thunderbird. That is NO guarantee that it will work well in any future version of AV or Thunderbird. When either AV or Thunderbird changes versions there can be interaction problems - even if for you Thunderbird is the only software affected, and even if your AV version did not change. ''You must explicitly test by disable/enable of AV to determine the impact on Thunderbird.'' The quickest way to test, is to [http://bit.ly/1MU6eMa start Windows in safe mode].'''}} | ||
= First Steps = | = First Steps = | ||
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The quickest way to test in impact of other software on Thunderbird is to [http://bit.ly/1MU6eMa start Windows in safe mode].''' | The quickest way to test in impact of other software on Thunderbird is to [http://bit.ly/1MU6eMa start Windows in safe mode].''' | ||
{{Warning|Your AV software probably | {{Warning|Your AV software has probably worked great for ages. That is NO guarantee it will work well in any future version of AV or Thunderbird. When either one changes version there can be interaction problems - even if for you Thunderbird is the only software affected, and even if your AV version did not change. ''You must explicitly test by disable/enable of AV to determine the impact on Thunderbird.'' The quickest way to test, is to [http://bit.ly/1MU6eMa start Windows in safe mode].'''}} | ||
= Problem Antivirus and Anti-Malware Packages = | = Problem Antivirus and Anti-Malware Packages = | ||
To test | To test whether Antivirus or Anti-Malware software is causing a problem, you must disable the software temporarily or [http://bit.ly/1MU6eMa run Windows in safe mode]. Permanent solutions might require you to disable parts of the software, change to different software, or exclude Thunderbird profile folder locations from scanning. The default profile location on Windows is [https://support.mozilla.org/en-US/kb/profiles-tb '''%appdata%\thunderbird\profiles'''] **NOTE, if you altered default profile location or Thunderbird accounts to put mail somewhere on disk other than the standard profile location, you will need to also exclude those nonstandard locations. | ||
Problems have been reported with: | Problems have been reported with: | ||
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=== Avast caused slowness and errors regarding nsemail.HTML === | === Avast caused slowness and errors regarding nsemail.HTML === | ||
The release of Avast 10.3.2223 ( We think it is that version) has resulted in issues with avasts preventing Thunderbird from functioning correctly. The workaround appears to be to create an exception in avast for the file nsemail.html in your computers temp folder. I have to say "appears to be" as Avast have not yet replied to my email. [https://forum.avast.com/index.php?topic=174203.msg1237332#msg1237332], [https://forum.avast.com/index.php?topic=174392.msg1238419#msg1238419], [https://forum.avast.com/index.php?topic=78428.msg1236530#msg1236530], [https://forum.avast.com/index.php?topic=174153.msg1237802#msg1237802], [https://forum.avast.com/index.php?topic=174153.msg1237802#msg1237802], [https://forum.avast.com/index.php?topic=174140.msg1237521#msg1237521] SUMO links [https://support.mozilla.org/en-US/questions/1068609], [https://support.mozilla.org/en-US/questions/1075713] | The release of Avast 10.3.2223 ( We think it is that version) has resulted in issues with avasts preventing Thunderbird from functioning correctly. The workaround appears to be to create an exception in avast for the file nsemail.html in your computers temp folder. I have to say "appears to be" as Avast have not yet replied to my email. [https://forum.avast.com/index.php?topic=174203.msg1237332#msg1237332], [https://forum.avast.com/index.php?topic=174392.msg1238419#msg1238419], [https://forum.avast.com/index.php?topic=78428.msg1236530#msg1236530], [https://forum.avast.com/index.php?topic=174153.msg1237802#msg1237802], [https://forum.avast.com/index.php?topic=174153.msg1237802#msg1237802], [https://forum.avast.com/index.php?topic=174140.msg1237521#msg1237521] SUMO links [https://support.mozilla.org/en-US/questions/1068609], [https://support.mozilla.org/en-US/questions/1075713] | ||
=== Avast | === Avast causes hangs with "Allow anti-virus clients to quarantine individual incoming messages" === | ||
As advised by user BigDave67 in th support topic [https://support.mozilla.org/en-US/questions/1094117 1094117] | As advised by user BigDave67 in th support topic [https://support.mozilla.org/en-US/questions/1094117 1094117] | ||
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# Restarted Thunderbird. | # Restarted Thunderbird. | ||
=== Avast 2015 | === Avast 2015 causes invalid mail server certificate warnings sending/receiving mail === | ||
Avast describe the cause thus "The Mail Shield in Avast 2015 uses advanced scanning method for incoming and outgoing e-mails over SSL/TLS secured connections", the reality is they perform a man in the middle hack of your connection using SSL certificates by making themselves a top level certifying authority. As Thunderbird like all quality mail client maintains it's own certificate store the Avast hack does not work. There are [https://www.avast.com/en-eu/faq.php?article=AVKB91#artTitle instructions on the avast site] explaining how to make then a trusted certifying authority. | Avast describe the cause thus "The Mail Shield in Avast 2015 uses advanced scanning method for incoming and outgoing e-mails over SSL/TLS secured connections", the reality is they perform a man in the middle hack of your connection using SSL certificates by making themselves a top level certifying authority. As Thunderbird like all quality mail client maintains it's own certificate store the Avast hack does not work. There are [https://www.avast.com/en-eu/faq.php?article=AVKB91#artTitle instructions on the avast site] explaining how to make then a trusted certifying authority. | ||
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[http://en.wikipedia.org/wiki/Malware Malware] (usually found only on Windows systems but could be on any system e.g. Mac or Linux; it's just much rarer for Mac and Windows systems) can install a bogus Internet access proxy.This proxy can slow down Thunderbird and other programs that access the Internet with the symptoms being "couldn't connect to proxy" errors, slow sending and receiving of email and images not being displayed in HTML emails. | [http://en.wikipedia.org/wiki/Malware Malware] (usually found only on Windows systems but could be on any system e.g. Mac or Linux; it's just much rarer for Mac and Windows systems) can install a bogus Internet access proxy.This proxy can slow down Thunderbird and other programs that access the Internet with the symptoms being "couldn't connect to proxy" errors, slow sending and receiving of email and images not being displayed in HTML emails. | ||
== Problem:[http://getsatisfaction.com/mozilla_messaging/topics/what_happened_to_progress_with_new_versions_going_backward#reply_3702668 Windows System Proxy blocking HTML images anecdote | == Problem:[http://getsatisfaction.com/mozilla_messaging/topics/what_happened_to_progress_with_new_versions_going_backward#reply_3702668 Windows System Proxy blocking HTML images anecdote] == | ||
* don't think this is a MalwareBytes problem but you never know! | * don't think this is a MalwareBytes problem but you never know! | ||
<blockquote> | <blockquote> | ||