We tested in Chinese (Taiwan) Windows, and there was no problem in the Updater function in EmEditor (v14.4.3 and v14.4.4). Please make sure you download EmEditor from our website, and make sure the digital signature is OK. (See http://www.emeditor.com/support/#toggle-id-1 to read how to check the Digital Signature is OK). You may download EmEditor from any language pages of our website. Whether you download from English page (http://www.emeditor.com/download/) or Chinese (http://zh-tw.emeditor.com/download/), you will get exactly the same file.
Thanks,