Thunderbird:Testing:Antivirus Related Performance Issues: Difference between revisions

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Thunderbird:Testing:Antivirus Related Performance Issues (view source)

Revision as of 15:43, 24 December 2017

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expand on and clarify safe mode, add Mac safe mode, add user choices
(Avira on Mac)
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'''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 random or consistent crashes]].  
'''This article is not just about performance issues.'''  Antivirus software can also [[Thunderbird:Testing:Antivirus_Related_Performance_Issues#symptoms|cause odd behavior (bad, incorrect or unusual), and crashes (random or consistent, infrequent or frequent)]].  


<br><br>The information below is anecdotal, users like you giving their personal experiences. These are not the result of organized testing. So if you have a problem that is not listed here, please help other users by adding your experience to the list. (create a wiki account, and select edit)
<br><br>The information below is from users like you. These are not the result of organized testing.  
 
<br><br>If you have a problem that is not listed here, please help other users by adding your experience to the list. (create a wiki account, and select edit to change the wiki)




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* OS hangs or crashes
* OS hangs or crashes


Including but not limited to doing the following:  
... while doing the following:  
* Starting Thunderbird
* Starting Thunderbird
* Images not displaying
* Images not displaying
* Opening file attachments  
* Opening file attachments  
* Selecting a different folder
* Selecting a different folder
* Opening/displaying a message  
* Opening / displaying a message  
* Moving messages to a different folder  
* Moving messages to a different folder  
* Replying to a message / Sending a message
* Replying to a message / Sending a message
* Downloading or attempting to get new messages  
* Downloading or attempting to get new messages (receiving mail)
* Initial mailbox indexing when upgrading to 3.0.1 from a previous version  
* Initial mailbox indexing when upgrading to 3.0.1 from a previous version  


{{Warning|Your AV software probably worked great for ages, in previous versions of Thunderbird. But that is NO guarantee it will work well now, or in any future version of AV or Thunderbird. AV or Thunderbird updates or version changes can cause interaction problems - even if 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].'''}}
= My Problem Cannot be Caused by Antivirus =
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 ages, across many previous versions of Thunderbird. But that is NO guarantee it is working correctly now. Antivirus and Thunderbird have a complex relationship which can be broken by updates or version changes (of either software) - yes even if 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], or [https://support.apple.com/en-us/HT201262 start Mac in safe mode].'''}}


= First Steps =
= First Steps =


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 antivirus and other software on Thunderbird 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 in safe mode, then the cause is often antivirus software.
 
'''*NOTE, disabling antivirus through AV settings has proven over the years to not be a perfect or sufficient test. Sometimes it works, but the only test that can be fully trusted is OS safe mode.'''
 
'''*NOTE, if you altered the default profile location, or location of Thunderbird accounts, to store mail somewhere on a non-standard location, you MUST change your antivirus software to exclude these nonstandard locations.'''
 
= Testing Suggests My Problem is Caused by Antivirus Software =
If safe mode or other adjustments suggest that antivirus may be causing your problem, you have the following choices:
* Adjust the exclusions in the antivirus software settings to stop the problem. %%
* Turn off features in antivirus software that are not absolutely necessary. %% Some features are included to make the vendor look good against their compeition, but don't necessarily make you much safer.
* Inform the antivirus vendor, and be persistent in getting past a canned response that their software is not at fault.
* Find a different antivirus software or vendor that offers more reliable service.


{{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].'''}}
%% You might find suggestions below, on an antivirus website or support site, or in [https://mzl.la/2D8RjeN a bug report which flags antivirus in the whiteboard].


= Problem Antivirus and Anti-Malware Packages  =
= Problem Antivirus and Anti-Malware Packages  =


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.
Please see the sections above before proceeding.


Problems have been reported with:  
Problems have been reported with:  
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= Unaffected Antivrus Packages  =
= Unaffected Antivrus Packages  =


The following programs have generally been observed as working well with Thunderbird (but not proof that these products can't have problems):
The following programs have generally been reported to work well with Thunderbird. (This is not proof that these products can't have problems)  


*AVG Antivirus - (revised) from [https://getsatisfaction.com/mozilla_messaging/topics/avg_email_scanner_disabled] "[AVG]  are no longer going to support the Thunderbird plugin because of the frequent updates of Thunderbird." And you may see problems with older versions (like 9.0.830). AVG may cause slow downloading of pop mail [http://gsfn.us/t/o1qa]. and AVG 9.0 may slow down sending with TB 3.1.x if set to scan outgoing messages) [http://forums.mozillazine.org/viewtopic.php?p=9663497#p9663497].  
*AVG Antivirus - (revised) from [https://getsatisfaction.com/mozilla_messaging/topics/avg_email_scanner_disabled] "[AVG]  are no longer going to support the Thunderbird plugin because of the frequent updates of Thunderbird." And you may see problems with older versions (like 9.0.830). AVG may cause slow downloading of pop mail [http://gsfn.us/t/o1qa]. and AVG 9.0 may slow down sending with TB 3.1.x if set to scan outgoing messages) [http://forums.mozillazine.org/viewtopic.php?p=9663497#p9663497].  
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