Exhibit 4.1

THE SECURITIES REPRESENTED HEREBY (THE "SECURITIES") HAVE NOT BEEN REGISTERED
UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), OR THE
SECURITIES LAWS OF ANY STATE AND MAY NOT BE SOLD OR OFFERED FOR SALE IN THE
ABSENCE OF AN EFFECTIVE REGISTRATION STATEMENT FOR THE SECURITIES OR AN OPINION
OF COUNSEL OR OTHER EVIDENCE ACCEPTABLE TO THE CORPORATION THAT SUCH
REGISTRATION IS NOT REQUIRED.

                              XYBERNAUT CORPORATION

                          COMMON STOCK PURCHASE WARRANT

                  1. Issuance. For good and valuable consideration, the receipt
of which is hereby acknowledged by Xybernaut Corporation, a Delaware corporation
(the "Company"), Archway Holdings Limited, or its registered assigns (the
"Holder") is hereby granted the right to purchase at any time until 5:00 P.M.,
New York City time, on May____, 2006 (the "Expiration Date"), Eight Hundred
Twenty Eight Thousand Five Hundred and Seventy One (828,571) shares of the
Company's Common Stock, par value $.01 per share (the "Common Stock") at an
initial exercise price of $5.00 per share (the "Exercise Price"), subject to
further adjustment as set forth in Section 6 hereof.

                  2. Exercise of Warrants. This Warrant is exercisable in whole
or in part at the Exercise Price per share of Common Stock payable hereunder,
payable in cash or by certified or official bank check. Upon surrender of this
Warrant Certificate with the annexed Notice of Exercise Form duly executed,
together with payment of the Exercise Price for the shares of Common Stock
purchased, the Holder shall be entitled to receive a certificate or certificates
for the shares of Common Stock so purchased.

                  3. Reservation of Shares. The Company hereby agrees that at
all times during the term of this Warrant there shall be reserved for issuance
upon exercise of this Warrant such number of shares of its Common Stock as shall
be required for issuance upon exercise of this Warrant (the "Warrant Shares").

                  4. Mutilation or Loss of Warrant. Upon receipt by the Company
of evidence satisfactory to it of the loss, theft, destruction or mutilation of
this Warrant, and (in the case of loss, theft or destruction) receipt of
reasonably satisfactory indemnification, and (in the case of mutilation) upon
surrender and cancellation of this Warrant, the Company will execute and deliver
a new Warrant of like tenor and date and any such lost, stolen, destroyed or
mutilated Warrant shall thereupon become void.

                  5. Rights of the Holder. The Holder shall not, by virtue
hereof, be entitled to any rights of a stockholder in the Company, either at law
or equity, and the rights of the Holder


are limited to those expressed in this Warrant and are not enforceable against
the Company except to the extent set forth herein.

                  6. Protection Against Dilution.

                    (a) Adjustment Mechanism. If an adjustment of the Exercise
Price is required pursuant to this Section 6, the Holder shall be entitled to
purchase such number of additional shares of Common Stock as will cause (i) the
total number of shares of Common Stock Holder is entitled to purchase pursuant
to this Warrant, multiplied by (ii) the adjusted purchase price per share, to
equal (iii) the dollar amount of the total number of shares of Common Stock
Holder is entitled to purchase before adjustment multiplied by the total
purchase price before adjustment.

                    (b) Capital Adjustments. In case of any stock split or
reverse stock split, stock dividend, reclassification of the Common Stock,
recapitalization, merger or consolidation, or like capital adjustment affecting
the Common Stock of the Company, the provisions of this Section 6 shall be
applied as if such capital adjustment event had occurred immediately prior to
the date of this Warrant and the original purchase price had been fairly
allocated to the stock resulting from such capital adjustment; and in other
respects the provisions of this Section 6 shall be applied in a fair, equitable
and reasonable manner so as to give effect, as nearly as may be, to the purposes
hereof. A rights offering to stockholders of the Company shall be deemed a stock
dividend to the extent of the bargain purchase element of the rights.

                  7. Transfer to Comply with the Securities Act; Registration
Rights.

                      (a) This Warrant has not been registered under the
Securities Act of 1933, as amended (the "Act"), or any applicable state
securities laws, and has been issued to the Holder for investment and not with a
view to the distribution of either the Warrant or the Warrant Shares. Neither
this Warrant nor any of the Warrant Shares or any other security issued or
issuable upon exercise of this Warrant may be sold, transferred, pledged or
hypothecated in the absence of an effective registration statement under the Act
relating to such security or an opinion of counsel satisfactory to the Company
that registration is not required under the Act. Each certificate for the
Warrant, the Warrant Shares and any other security issued or issuable upon
exercise of this Warrant shall contain a legend on the face thereof, in form and
substance satisfactory to counsel for the Company, setting forth the
restrictions on transfer contained in this Section.

                      (b) The Company agrees to file a registration statement,
which shall include the Warrant Shares, on Form S-3 or another available form
(the "Registration Statement"), pursuant to the Registration Rights Agreement
between the Company and the Holder dated as of April 19, 2001 (the "Registration
Rights Agreement").

                  8. Notices. Any notice or other communication required or
permitted hereunder shall be in writing and shall be delivered personally,
telegraphed, telexed, sent by facsimile transmission or sent by certified,
registered or express mail, postage pre-paid. Any such notice shall be deemed
given when so delivered personally, telegraphed, telexed or sent by

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facsimile transmission, or, if mailed, two (2) days after the date of deposit in
the United States mails, as follows:

                           (i)      if to the Company, to:

                                    Xybernaut Corporation
                                    12701 Fair Lakes Circle
                                    Suite  550
                                    Fairfax, Virginia 22033
                                    Attn:  John F. Moynahan, Sr. Vice President
                                    and Chief Financial Officer
                                    Telephone No.: (703) 631-6925
                                    Facsimile No.: (703) 631-3903

                           with a copy to:

                                    Jenkens & Gilchrist Parker Chapin LLP
                                    The Chrysler Building
                                    405 Lexington Avenue
                                    New York, New York  10174
                                    Attn: Martin Eric Weisberg, Esq.
                                    Telephone No.: (212) 704-6000
                                    Facsimile No.: (212) 704-6288


                           (ii)     if to the Holder, to:

                                    Archway Holdings Limited
                                    Gretton House, P.O. Box 65
                                    Duke Street, Grand Turk
                                    Turks & Caicos Islands
                                    British West Indies
                                    Attn:   C.B. Williams
                                    Telephone No.:  (649) 946-2133
                                    Facsimile No.:  (649) 946-2933

Any party may be notice given in accordance with this Section to the other
parties designate another address or person for receipt of notices hereunder.

                  9. Supplements and Amendments; Whole Agreement. This Warrant
may be amended or supplemented only by an instrument in writing signed by the
parties hereto. This Warrant and the Purchase Agreement, of even date herewith,
by and between the Company and the Holder contain the full understanding of the
parties hereto with respect to the subject matter hereof and thereof and there
are no representations, warranties, agreements or understandings other than
expressly contained herein and therein.

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                  10. Governing Law. This Warrant shall be deemed to be a
contract made under the laws of the State of New York and for all purposes shall
be governed by and construed in accordance with the laws of such State
applicable to contracts to be made and performed entirely within such State.

                  11. Counterparts. This Warrant may be executed in any number
of counterparts and each of such counterparts shall for all purposes be deemed
to be an original, and all such counterparts shall together constitute but one
and the same instrument.

                  12. Descriptive Headings. Descriptive headings of the several
Sections of this Warrant are inserted for convenience only and shall not control
or affect the meaning or construction of any of the provisions hereof.

         IN WITNESS WHEREOF, the parties hereto have executed this Warrant as of
the ____ day of May 2001.

                                      XYBERNAUT CORPORATION


                                      By:
                                         ---------------------------------------
                                         Name:
                                         Title:



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                          NOTICE OF EXERCISE OF WARRANT

         The undersigned hereby irrevocably elects to exercise the right,
represented by the Warrant Certificate No. W-__ dated as of April 19, 2001, to
purchase __________ shares of the Common Stock, par value $.01 per share, of
Xybernaut Corporation and tenders herewith payment in accordance with Section 1
of said Common Stock Purchase Warrant.

         Please deliver the stock certificate to:

Dated:______________________




                                           By:__________________________________


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