4 Testing Suggests My Problem is Caused by Antivirus Software Avast Free Antivirus for Mac is Avasts answer to concerns about how to. How could it be when the app combines the functionality of a dozen apps into one awesome package Protect against viruses & Find duplicate passwords, strengthen your weak ones, and receive warnings if any. Avast Mac security is a highly effective solution protecting against all types of malware. As a free mac security product, Avast Security for Mac is recognized as being one of the best free Mac antivirus programs available. Download it, looking for viruses or invasive permissions.7.4.4 Avast Blocks Sending and Receiving 7.4.3 Avast 2015 causes invalid mail server certificate warnings sending/receiving mail 7.4.2 Hangs with "Allow anti-virus clients to quarantine individual incoming messages" 7.4.1 Slowness and errors with nsemail.HTML 7 Configuration Notes and Solutions for specific Anti Virus products Diagnosing Memory Usage Problems & Performance (create a wiki account, and click "edit") Antivirus software can also cause odd behavior (bad, incorrect or unusual), and crashes (random or consistent, infrequent or frequent).Much of the information below is from users like you.If you have a problem that is not listed here, please add it to the list so other users can benifit. 9.2 Solution: Disable Windows System ProxiesThis article is not just about performance issues. 9.1 Problem:Windows System Proxy blocking HTML images anecdote 9 Bogus Windows System Proxies Left by Malware
![]() Avast Warnings Mac Security ProductBut this is NO guarantee it is working correctly now. I even tried disabling my antivirus software.Warning: Your antivirus software probably worked great for months or years, across many previous versions of Thunderbird. Thunderbird is the only program that is affected. Initial mailbox indexing for global searchMy Antivirus software has been working great. Downloading or attempting to get new messages (receiving mail) Replying to a message / Sending a message *NOTE, testing by disabling antivirus using AV settings has proven over the years to not be a perfect or sufficient test, because sometimes AV setting changes are not effective. If your problem is gone with the operating system in safe mode, then the cause can be antivirus or some other software loading during the OS startup. First StepsA quick test of the impact of antivirus software (AV) is starting Windows in safe mode, or starting Mac in safe mode. 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. 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. Yes even if Thunderbird is the only software affected, even if your AV version did not change. How to download dolphin emulator macAdjust the exclusions in the antivirus software settings to stop the problem. If you have altered Thunderbird to put your profile account data in a nonstandard file location then you MUST set your antivirus software to exclude these nonstandard locations.Testing Suggests My Problem is Caused by Antivirus SoftwareIf safe mode or other adjustments suggest that antivirus may be causing your problem, you have the following choices: If you determine AV to be a problem, then you must either disable the AV feature affecting Thunderbird (typically by excluding the Thunderbird profile), or change to a different AV program. Bitdefender solved by disabling BD or adding exception for Thunderbird:, crashes Thunderbird, , , tbird_24 very slow - solved by reinstalling BD. Avira antivirus slow Mac, slow Mac, blocks compact, , Problem Antivirus and Anti-Malware PackagesPlease see the sections above before proceeding. Find a different antivirus software or vendor that offers more reliable service.%% You might find suggestions below, on an antivirus website or support site, or in a bug report which flags antivirus in the whiteboard. Inform the antivirus vendor, and be persistent in getting past a canned response that their software is not at fault. %% Some features are included to make the vendor look good against their compeition, but don't actually make you much safer. Recover files deleted from recycle bin for macEmsisoft Online Armor firewall - thunderbird must be set as a "trusted" program Emsisoft Anti-Malware, Guard option Nov2010 TB and Emsisoft forum post indicates slowness may have been around since TB 3 days BullGuard bug 537769 and (see BullGuard solution below) Panda Cloud Anti Virus Free v 2. , , , , , , bug 1441918 (Firefox), bug 1640725 Microsoft Windows Defender aka "Antimalware Service Executable" (ASE) aka MsMpEng.exe how to exclude Thunderbird User reports of slowness fixed by creating an exclusion for the Thunderbird profile folder. McAfee: Main McAfee topic below McAfee Active Protection bug 544684 shutdown hang, slow startup, bug 1015437 Slow getting mail F-Secure causes Mac OS X to be slow: , bug 1328177 F-Prot (see Solution for F-Prot Antivirus below) When Panda uninstalled, Thunderbird was back to normal. No apparent tweaks worked. Thus the mail was not sent. Thunderbird v 24.3.0 said it could not access the temp directory although the outgoing emails were there. Sophos - Instructions for Sophos (untested) I have taken the freedom to quote your email to "bump up" our bug report and I have also raised the severity of the bug." We are aware that this approach may not be the most intuitive for our users and we are currently treating it as a bug. as of January 11, 2012,by default Secunia PS 2.0 forces an update to English rather than localized Thunderbird WORKAROUND from secunia: "To change this, the user can double-click the program entry in the Scan Results and then choose the preferred language in the drop-down menu. Secunia PSI (User Contributed Notes) Disable the email scanning option in Vipre. This will prevent email from sending or receiving properly when Email Protection is enabled. Vipre If you are using the I use another email client option or the Spam Filtering option on VIPRE, please note that these do not support SSL or TLS (STARTTLS) connections. Symantec Norton Security Suite/NSS (offered through Comcast) *firewall* caused crash bug 598662 (Bug report) , , , Thunderbird 31 slow ( see Norton's Exclusion instructions) Symantec Norton Antivirus. AVG may cause slow downloading of pop mail. AVG Antivirus - (revised) from " 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). (This is not proof that these products can't have problems) Trend Micro Instructions to exclude, SUMO report, bug 534823 (Bug report)Also, several products have caused pop download errors or slowness if incoming mail is scanned Unaffected Antivrus PackagesThe following programs have generally been reported to work well with Thunderbird. (old assessment and perhaps no longer true. I'm using the global protection to protect me from anything that could be launched from a mail." There is no specific MAIL protection activated in the free version I have. ANTIVIR 9 seems to work with Thunderbird 3 - from klint: "ANTIVIR 9 (Free version) runs fine, but.
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