How do i remove this white color line? and why is this happening? ty

What OS are you using? What Windowblind version? What is the name of the skin you are using?

Looks like a maybe a Winstep Theme on top of Naked Noir, or possibly just Winstep with different NextStart task bar and WorkShelf themes? Not any Winstep WorkShelf that I know, though. No way to tell...

More details needed. Which skinning apps are you using, which themes and what is your OS?

Sorry guys my bad Im using Windows 8 Single Language Original.Im using windows blind 10 trial version but its not with any theme activated(Default theme)This problem happens in any Theme that i use.

I tried test in Windows 8(all)and windows 7(all) but the cause to me remains a mistery...

That isn't the default W8 theme.

What other software are you using to get the window to look like that?

Is it msstyles or software like msstyles? If it is, that's the source of your problem. msstyles alters sys32 files. You'll have to uninstall msstyles and do a  sfc /scannow  from an elevated (Admin) cmd.exe prompt to restore those files before Windowblinds will work correctly.

I don't even think it's windowblinds, plus It looks like it's part of the taskbar, hence the Aligned "side cuts". 

-Doc beat me 2 it.

Considering the occurence of 'mythemepack' in the sceenshot might indicate that he tries to use themepacks from skinpacks.com (requiring uxthemepatcher) with WindowBlinds.

You would know more about that than I would. If you are correct better do what Reply 4 said. Windowblinds won't work with a hacked OS. The only thing that works with WB are Windowblind themes. They have an extension that ends with .wba. 

So either use the stuff you are using or do as Doc said and get rid of all the other crap. 

tinyhenk is correct. themepacks do not work with WindowBlinds.

Now go back and read comment #4.

You are correct, Doc. I may be wrong, but I believe this person is trying to apply themepacks with WindowBlinds.

Also, if memory serves, Windows 8 does not support aero, which might explain the "white" line.

Thank you guys i tried to re-install the uxstyle and it worked...

I was thinking about all of this and when I came back on the UxStyle site I saw that it clearly stated "UxStyle_sep23_x86_x64_possibly_bugged" so i think it was one of it bugs
In the case of Windows 7 I realized that some themes that I had installed before were for W7 Sp1 I made windows update AFTER installing the themes ... my bad guys ... are all awesome and very helpful ^^
Good to know that themespacks do not work very well with Windows blinds
Thank you all

There is any topic about troubleshooting in themes that may be used like a guide? TY