Why can't I use multi-CPU processing?

[zhuanxu]

My English is not good. If anything is strange, please forgive me.

Thank you for your update, I have been looking forward to this feature for a long time, but I can't use it many times.

The test converts the image to JPG or PNG or WEBP.

I have two systems,

WIN7 - x64 - SP1

WIN10 - x64 - 1709 - Dec 12 update

All are prompted as shown below.

If you can help me，please

[xnview]

could you post a screenshot of Output tab?

[zhuanxu]

could you post a screenshot of Output tab?

yes

[xnview]

Overwrite 'Ask' can't be used in multi core

[zhuanxu]

Overwrite 'Ask' can't be used in multi core

Oh, I get it. . Cannot use "ask" when the output file already exists

Thank you. . I have been using traditional Chinese. So didn't figure out what "ask" is.