Author Topic: Boot Time Scan Problem  (Read 8933 times)

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Offline oldman

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Re: Boot Time Scan Problem
« Reply #15 on: April 08, 2008, 02:47:17 PM »
Quote
I'm not sure how to or if I can reply to your PM.

lexluthor

Make 1 more post, them PM will work for you.

lexluthor

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Re: Boot Time Scan Problem
« Reply #16 on: April 08, 2008, 02:55:40 PM »
Please check the end of the aswBoot.log file - what are the last few lines?


See above, I edited my post.

Offline igor

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Re: Boot Time Scan Problem
« Reply #17 on: April 08, 2008, 03:03:36 PM »
That's the very end of the log?
Even though it seems like it mostly finished (is "Software" the last folder on your D: drive - alphabetically, and XviD-1.1.3-28062007.exe the last file inside of it?), the last line should say "CloseLog"...

lexluthor

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Re: Boot Time Scan Problem
« Reply #18 on: April 08, 2008, 03:18:59 PM »
Yes, that's the end of the log.

The D: only has one folder, called Software.  It's only a 1GB partition.

There appears to be no "CloseLog" entry.

What next?

Offline igor

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Re: Boot Time Scan Problem
« Reply #19 on: April 08, 2008, 05:36:07 PM »
Well, I'll build the real boot-time scanner (the logging version) to see if the problem can be simulated at least there...

hines232

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Re: Boot Time Scan Problem
« Reply #20 on: April 08, 2008, 07:05:04 PM »
System Windows ME.
Regseeker
Super antispy ware
Spywareblaster
CCleaner
Avast 4.8 (Home)
(Wish every one did this)
What the heck is a BOOT TIME SCAN ????? (Home or Pro version):-X

tevion

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Re: Boot Time Scan Problem
« Reply #21 on: April 08, 2008, 07:10:35 PM »
Well, I'll build the real boot-time scanner (the logging version) to see if the problem can be simulated at least there...

hi,
hope there will be a solution soon ... have the same error logs like lexluthor.
This are the now well known last lines of my boot-time scan:

exception! Error:0x77DF8B8AUnhandled exception! Error:0x77DF8B8AUnhandled exception! Error:0x77DF8B8AUnhandled exception! Error:0x77DF8B8AUnhandled exception! Error:0x77DF8B8AUnhandled exception! Error:0x77DF8B8AUnhandled exception! Error:0x77DF8B8AUnhandled exception! Error:0x77DF8B8AUnhandled exception! Error:0x77DF8B8AUnhandled exception! Error:0x77DF8B8AUnhandled exception! Error:0x77DF8B8AUnhandled exception! Error:0x77DF8B8AUnhandled exception! Error:0x77DF8B8AUnhandled exception! Error:0x77DF8B8AUnhandled exception! Error:0x77DF8B8AUnhandled exception! Error:0x77DF8B8AUnhandled exception! Error:0x77DD55E7Unhandled exception! Error:0x77DF8B8AUnhandled exception! Error:0x77DF8B8A

Tevion

lexluthor

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Re: Boot Time Scan Problem
« Reply #22 on: April 08, 2008, 07:22:35 PM »
Well, I'll build the real boot-time scanner (the logging version) to see if the problem can be simulated at least there...

Got it.  I probably won't be able to report the results back until tomorrow morning US time.

Offline igor

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Re: Boot Time Scan Problem
« Reply #23 on: April 08, 2008, 08:59:05 PM »
No problem, thanks for any help.

Tevion, would you also be interested in trying a special executable (with extensive logging capabilities)? It might give us some clues...

Offline DavidR

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Re: Boot Time Scan Problem
« Reply #24 on: April 08, 2008, 11:32:57 PM »
System Windows ME.
<snip>
Avast 4.8 (Home)
(Wish every one did this)
What the heck is a BOOT TIME SCAN ????? (Home or Pro version):-X

It isn't available on non-NT OSes, win9x, WinME. But it is able to do a scan before windows boots. This overcomes virus detections that when you select move to chest, etc. they can't be moved because they are in use or protected. When avast is first installed, if your OS supports it avast suggests you run a boot-time scan.

So basically you wouldn't suffer a boot-time scanner problem.
Windows 10 Home 64bit/ Acer Aspire F15/ Intel Core i5 7200U 2.5GHz, 8GB DDR4 memory, 256GB SSD, 1TB HDD/ avast! free 21.11.2500 (build 21.11.6809.528) UI 1.0.683/ Firefox, uBlock Origin, uMatrix/ MailWasher Pro/ Avast! Mobile Security

tevion

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Re: Boot Time Scan Problem
« Reply #25 on: April 09, 2008, 07:40:42 PM »
No problem, thanks for any help.

Tevion, would you also be interested in trying a special executable (with extensive logging capabilities)? It might give us some clues...


Hi Igor,
sorry for my late answer ...yes, indeed i have interest to help!
What should i do?
Tevion

Offline igor

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Re: Boot Time Scan Problem
« Reply #26 on: April 14, 2008, 05:02:54 PM »
OK, I hope I found this one... it was quite tricky.
A supposed fix will be included in the next update (or beta refresh, if there is any - so you are welcome to check).

lexluthor

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Re: Boot Time Scan Problem
« Reply #27 on: April 14, 2008, 05:41:52 PM »
Great news.

How'd you find it?  Want to share what was going on?

Offline igor

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Re: Boot Time Scan Problem
« Reply #28 on: April 14, 2008, 09:40:17 PM »
Well, in the end I was able to reproduce the problem on my notebook... which was followed by two days of debugging, trying to find out where the hell the memory gets corrupted (it's not possible to start the boot-time scanner normally from Windows, so I used a special loader to make it possible, which in turn had some strange effects on the keyboard, so I had to control the machine remotely from another computer standing next to it...). In the end I found something wrong in the handling of threads in the boot-time scanner (well, "wrong" means it seemed to be wrong... the whole thing is undocumented and I didn't want to trace deep inside of Windows kernel, because Vlk - who knows more than me about NT kernel - is skiing somewhere ;))

Anyway, if you're interested, you can try the updated version here.
Just note that when you overwrite the original file in Windows\System32 folder with this new one, avast! setup will notice soon and overwrite it back with the official build - so you'd better overwrite it right before the restart (after scheduling the boot-time scan).

lexluthor

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Re: Boot Time Scan Problem
« Reply #29 on: April 14, 2008, 09:45:55 PM »
Thanks for the insight.

I don't really do a boot time scan often.  I'll wait for the update though the standard channels to try again.