1 EXHIBIT 23.3 CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS We consent to the reference to our firm under the caption "Experts" and to the use of our report dated January 28, 2000, with respect to the financial statements of Vertical Software, Inc. incorporated by reference in Amendment No. 1 to the Registration Statement on Form SB-2 filed on Form S-3 and related Prospectus of FutureLink Corp. for the registration of 60,830,378 shares of its common stock. /s/ ERNST & YOUNG LLP McLean, Virginia February 8, 2001