Open Text Completes its Acquisition of Microstar Software Ltd.

Waterloo, ON - 1999-09-20 - Open Text Corporation (NASDAQ: OTEX, TSE: OTC), the leading provider of collaborative knowledge management and corporate portal solutions, today announced that it has taken up and paid for, through a wholly-owned subsidiary, 3,046,594 common shares of Microstar Software Ltd. (TSE:MSS) shares. This number of common shares represents 92.87% of Microstar s issued and outstanding share capital.

The Microstar shares were deposited pursuant to an offer made by 3557855 Canada Inc., a wholly-owned subsidiary of Open Text, by way of a take-over bid circular dated August 12, 1999. In an effort to obtain at least 90% of Microstar s issued and outstanding common shares, Open Text extended the take-over bid, in accordance with a Notice of Extension dated September 2, 1999. The take-over bid was extended to 12:00 midnight on September 17, 1999. Having acquired more than 90% of the common shares of Microstar, Open Text will commence procedures to compulsorily acquire the remaining shares of Microstar. The compulsory acquisition is expected to be completed by early November 1999.

Open Text intends to change the Microstar board of directors, shortly following the acquisition, by replacing current directors with Open Text nominees.

About Microstar

Microstar Software Ltd. provides structured information management solutions comprised of technology and services for Global 2000 companies. These solutions enable Microstar s customers to effectively and economically create, manage and distribute their corporate knowledge assets. The company is recognized for its innovative standards-based solutions based on SGML and XML. Microstar s technology expertise includes the development of XML and SGML tools such as Near & Far® Designer and the Ælfred XML parser. The company is listed on the Toronto Stock Exchange (MSS). Information about Microstar Software Ltd. is available on the World Wide Web at http://www.microstar.com.

For more information, please contact

Margaret E. Dobbin
Director, Industry Analyst Relations
Open Text Corporation
+1-519-888-7111 ext.2410
mdobbin@opentext.com