Is Himalayan University approved with WES Canada?

Universities listed on WES equivalency tool are kind of standard ones and that does not mean that other Universities are not recognised. Unless you apply, you can not know if your university is recognized or not.

It doesn't matter if it isn't listed. As long as the university and degree are legit and recognized, you'll get an ECA.

WES refers to official ministries in India such as University Grants Commission (UGC), All India Council for Technical Education (AICTE), the Ministry of Human Resource Development (MHRD), and other government entities as sources for accreditation. Because each application reflects a unique educational background, there are often exceptions and/or additional factors to consider in an individual’s’ application during the evaluation process.

Since, Himalayan University appears to be a recognised one by UGC (as the website mentions), qualifications earned from it will receive ECA from WES. However, one must get doubly sure for UGC recognition before applying to WES, because, sometimes, technical issues arise in the matter of private institutions.