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thx you guys so much; especially for the dude that started this thread... finally fixed that dang problem causing Windows Explorer to fail, Dwwin.exe to run, froze computer temporarilly and all because i clicked on or open explorer with ONE certain AVI file.

Again, another happy customer! MY PC was being more of an pain than usual, and thinks to 5 mins of googling and using the shmedia dll it seems fine!

Bloomin Microsoft!

Thanks very much for the tip on removing windows avi previewer. Been faffing around for weeks thinking it was a virus. Sorted in 5 minutes. Cheers!

Window 2000 work around:

In Windows Explorer select Tools -> Folder Options.
Under the “General” Tab, in “Web View” category, select to “Use Windows Classic folders”.
Next, select “View” Tab, and uncheck/disable “Show pop-up description for folder and desktop

items”

Of course with this disabled you don’t see pop-up descriptions on desktop items or any other

folder items (such as pdf, rar, zip, chm, txt files or any other types of file)

When the pop-up description is enabled, I guess Windows is trying to read the file for some info

to display in the pop-up description. For large avi files (700+ mb) it must be reading the large

avi file for some info that seems to consume 100% cpu for a short time.

In short, just disable the pop-up descriptions.

I have exactly the same problem, everytime I open a folder that has avi files, my explorer freezes! I thought I’ve got a virus or something... but “regsvr32 /u shmedia.dll” really did fix my problem. Thanks a lot for the advice!

I have seen many solutions and answers but I have had this happen to me twice, both times it was the h264codec ! 1st time it was from avs converter and today it came from my pinnacle software. pinnacle was fine TILL i disconnected it and then it gave problems on the codec.
So everyone having these problems, do a search on your computer for the codec and uninstall that program or if possible just the codec.

Thanks, regsvr32 /u shmedia.dll, worked perfectly!

thomaswww wrote: Hi,
i have XP Pro with SP2 and very laggy browsing in the explorer, when a folder contains some video files. After a while i noticed that this was because of this awful video preview thumbnail window in the explorer.

So i executed “REGSVR32 /U SHMEDIA.DLL” and now i can browse all dirs without any lag or system slowdowns (choppy video playback).
thomaswww

do people saying this mean that they just typed that one line in the command prompt? (just uninstalled it and not reinstalled it?)

The DivX AllInOneFix1_81 fixed the problem thank god i did not reload my system. it seems that would not have solved the issue

Thank you much!