<PAGE>
Exhibit 23.1
CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS
We consent to the reference to our firm under the caption "Experts" in the
Registration Statement (Form S-3, No. 333- ) and related Prospectus of
Onyx Software Corporation for the registration of $100.0 million of its common
stock and to the incorporation by reference therein of our report dated
January 28, 2000, except for Note 14, as to which the date is March 1, 2000,
with respect to the consolidated financial statements and schedule of Onyx
Software Corporation included in its Annual Report (Form 10-K) for the year
ended December 31, 1999, filed with the Securities and Exchange Commission.
/s/ Ernst & Young LLP
Seattle, Washington
November 17, 2000
