Boot time scan error 42100

Avast Free Antivirus / Premium Security
1

Hello All,

On a home user system running WinXP Pro SP2 I recently ran a Boot Time Scan with sensitivity on High.

Though no virus was found I received hundreds or “js error 42100” or “htm error 42100” or “html error 42100”.

Anyone know what this means?

Thanks so much for prompt reply, regards, Sheridan

2

Do you have an AMD64 machine?

3

…As a matter of fact that is precisely what I’m running the scan on, what does this mean?

Thanks for your reply! I love the Avast products, the most elegant of their kind!

-Sher

4

It basically means that the current version of avast does not work correctly with your setup: AMD64 + XP SP2.

The problem will be solved by the next program update, but in the meantime, a work around is to remove the /NOEXECUTE flag from c:\boot.ini…

This will turn off the new DEP (Data Execution Prevention) feature of SP2 (that only works on 64bit processors) but will effectively enable avast.

Thanks
Vlk

5

…Thanks so much, that helps!

6

I just got this error running Avast Home 4.6.691 (latest VPS) on an Intel Centrino laptop! :o
Turning the DEP off did not help.
Anything else I should try?

7

Please, can you post a screenshot of your “About windows” dialog?
(it will show e.g. if you run the winver command).

8

got the same error last night, coz when i scheduled it i did’nt re-start/rebooted right away. when i re-tried, (rebooted right away) error 42100 was gone. Give it a try!

NEC versa M400
XP Pro SP2
512Mb ram