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                                                                    EXHIBIT 10.2

                  FOURTH AMENDMENT TO THE AMENDED AND RESTATED
               HARBINGER CORPORATION EMPLOYEE STOCK PURCHASE PLAN

         THIS FOURTH AMENDMENT TO THE AMENDED AND RESTATED HARBINGER CORPORATION
EMPLOYEE STOCK PURCHASE PLAN (the "Amendment") is made effective as of the 25th
day of April, 2000 (the "Effective Date"), by HARBINGER CORPORATION, a
corporation organized and doing business under the laws of the State of Georgia
(the "Company"). All capitalized terms in this Amendment have the meaning
ascribed to such term as in the Amended and Restated Harbinger Corporation
Employee Stock Purchase Plan (the "Plan"), unless otherwise stated herein.

                              W I T N E S S E T H:

         WHEREAS, the Board of Directors of the Company desires to amend the
Plan to increase the number of shares that may be granted under the Plan;

         NOW THEREFORE, in consideration of the premises and mutual promises
contained herein, the Plan is hereby amended as follows:

         SECTION 1. Section 4(a) of the Plan is hereby amended by deleting the
first sentence of Section 4(a) of the Plan in its entirety and substituting in
lieu thereof the following:

                  "(a)     The maximum number of shares which may be granted and
         purchased under the Plan may not exceed 587,000 shares of Common Stock
         (subject to adjustment as provided in Section 15), which may be
         authorized but unissued shares, re-acquired shares or shares bought on
         the open market."

                  SECTION 2. Except as specifically amended by this Fourth
Amendment, the Plan shall remain in full force and effect as prior to this
Fourth Amendment.


         IN WITNESS WHEREOF, the Company has caused this FOURTH AMENDMENT TO THE
AMENDED AND RESTATED HARBINGER CORPORATION EMPLOYEE STOCK PURCHASE PLAN to be
executed on the Effective Date.

                                             HARBINGER CORPORATION

                                             By:
                                                -------------------------------
                                                James M. Travers
                                                CEO

         ATTEST:

         By:
            --------------------
            Loren B. Wimpfheimer
            Secretary