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The Bat! won't come to top, antimalware sucking resources
 
#1
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This happens a couple of times most days. The Bat! is running but unresponsive. If it's on top (visible) it doesn't respond, and if something is on top of it I can choose in taskbar, The Bat! appears but immediately disappears. I can minimize every window that's over The Bat! and it will be revealed, but unresponsive. Meanwhile task manager shows (MS) Antimalware Service Executable sucking up major CPU and power, I assume doing something with The Bat!

Here's a screen capture of the task manager https://app.screencast.com/GvoUSmB0tAH5D

There are 2 fixes for this, one is to kill TB! in task manager then re-launch (that usually fixes it), the other is to work on something else and eventually it will become responsive. So I don't really know how often this happens, if I'm working on something else for an extended period, it may well have gone through this process without my knowing.

Can anyone suggest what to do?

Thanks.
 
 
 
#2
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Try adding TB as an exclusion to MS Defender: Windows Security -> Virus & threat protection -> Virus & threat protection settings, Manage settings -> Add or remove exclusions
 
 
 
#3
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Thanks, I'll try that. However, do I _want_ virus protection to ignore my email?

Any idea why it ties up for so long?
 
 
 
#4
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>> (MS) Antimalware
Not an antivirus. Forget it and use it something another.
Модератор. Не являюсь сотрудником RitLabs (I'm not an employee of Ritlabs).
https://belrus.biz/vendors/ritlabs.html — Официальный дистрибьютор The Bat! в России
 
 
 
#5
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Andrew Webber wrote:
Thanks, I'll try that. However, do I _want_ virus protection to ignore my email?
If you are careful and reasonable, you really don't need classic antiviruses to mess with TB. In my 20+ years of using TB, I don't think I ever needed saving from an antivirus. Nowadays, filtering is done on the server side anyway. And there is always AntiSpamSniper for TB.

Also, you can tell MS Defender to exclude watching the *process*, not the folder contents.

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Andrew Webber wrote:
Any idea why it ties up for so long?
These things can happen between programs and antiviruses in general.

You can test the idea first: disable Defender and use TB for a while, see if the slowdown happens.

It may as well be something else, like CEF processes locking up, especially is you're using v11.4.1.
 
 
 
#6
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George Salnik wrote:
>> (MS) Antimalware Not an antivirus. Forget it and use it something another.
Alas, MS seems to have it all lumped together... No way to disable antimalware without disabling the antivirus.
 
 
 
#7
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especially is you're using v11.4.1.
Thanks, forgot to say it's 10.5.4

After a couple of days, I haven't noticed the lockup happening (but it's always possible it both happened and cleared itself when I wasn't looking).


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you can tell MS Defender to exclude watching the *process*, not the folder contents.
That's actually what I did. This is how I set it: https://app.screencast.com/SX9ljJAWQQRuj
 
 
 
#8
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Andrew Webber wrote:
That's actually what I did. This is how I set it:  https://app.screencast.com/SX9ljJAWQQRuj

Nice, I hope that does the trick.
 
 
 
#9
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Thanks, that worked for a while but seems to be back. I still have the The Bat! exclusion for MS Defender.

Am I supposed to have 6 tasks called "The Bat! E-Mail Client by Ritlabs SRL" under "The Bat! E-Mail Client by Ritlabs SRL (6)"?

=aw
 
 
 
#10
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Andrew Webber wrote:
Thanks, that worked for a while but seems to be back. I still have the The Bat! exclusion for MS Defender. Am I supposed to have 6 tasks called "The Bat! E-Mail Client by Ritlabs SRL" under "The Bat! E-Mail Client by Ritlabs SRL (6)"?

Yes, this is normal. From what I understand, one is TB itself, the others are CEF (Chromium Embedded Framework) used to view HTML messages and implement newer parts of TB in JavaScript such as the new address book interface, calendar, etc.

I don't know if there is a way to specify these sub-processes in the exclusions.

On the TB side, you could try one or the other of the following:
- Options -> Preferences... -> General -> Run CEF browser in single process (limitations: no PDF preview, probably also Office document preview, could be unstable)
- Run TB with the /ForceNoCEF command line option (limitations: uses alternative HTML viewer which is inferior to Chromium (but actually not terrible), has PDF viewer but not Office document viewer, no newer features mentioned above)
Edited: Miloš Radovanović - 29 June 2025 19:18:35
 
 
 
#11
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Thanks for the suggestions. It seems to be happening less frequently, but not never. I guess I could tell MS Defender not to scan .TBB files but that's probably not a good idea. ;)

I did raise a ticket with RIT just in case, and their answer was essentially that the AV software must be locking their files/process and they can't control that. They suggested trying another AV program, which I'm willing to do, but wouldn't any of them do the same?

Thanks again.
=andrew
 
 
 
#12
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Andrew Webber wrote:
They suggested trying another AV program, which I'm willing to do, but wouldn't any of them do the same?

I haven't used anything but MS Defender for years now, since it's serving me well. However, from prior experience I can tell you that AV programs vastly differ in how much resources they consume, how they treat processes, etc. Here it a general pattern: they start off quite friendly and useful, then over time become bloated and/or malware themselves to the point of becoming unusable. Then I would switch. So, I can't recommend any particular one right now, but chances are that a newer one that hasn't had the time to become bloat/malware (yet) can do the trick.
 
 
 
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