Exhibit 10.35

SECOND OMNIBUS REAFFIRMATION AGREEMENT,

AMENDMENT AND JOINDER TO LOAN DOCUMENTS

This SECOND OMNIBUS REAFFIRMATION AGREEMENT, AMENDMENT AND JOINDER TO LOAN DOCUMENTS, dated as of January 6, 2017 (this “Reaffirmation, Amendment and Joinder”), is entered into by and among CALENCE, LLC, a Delaware limited liability company, INSIGHT DIRECT USA, INC., an Illinois corporation, INSIGHT PUBLIC SECTOR, INC., an Illinois corporation (each a “Reseller” and collectively, the “Resellers”), DATALINK CORPORATION (as successor by merger with Reef Acquisition Co., a Minnesota corporation), a Minnesota corporation (“New Reseller”), INSIGHT ENTERPRISES, INC., a Delaware corporation (“Parent Guarantor”), INSIGHT CANADA HOLDINGS, INC., f/k/a Insight Canada, Inc., INSIGHT NORTH AMERICA, INC., INSIGHT DIRECT WORLDWIDE, INC., INSIGHT RECEIVABLES HOLDING, LLC and INSIGHT TECHNOLOGY SOLUTIONS, INC. (collectively, the “Subsidiary Guarantors” and, together with the Resellers and the Parent Guarantor, the “Reaffirming Parties”), CASTLE PINES CAPITAL LLC, a Delaware limited liability company (“CPC”) as Administrative Agent, and WELLS FARGO CAPITAL FINANCE, LLC, a Delaware limited liability company as Collateral Agent, Syndication Agent, and Administrative Agent (“WFCF”) (WFCF and CPC, collectively and in such capacities, the “Agents”). Capitalized terms used herein without definition shall have the meanings assigned to such terms in the Credit Agreement (as defined below).

WHEREAS, the Parent Guarantor notified the Agents and the Lenders that Parent Guarantor wishes to acquire (the “Datalink Acquisition”) all or substantially all of the assets or equity interests of Datalink Corporation, a Minnesota corporation, pursuant to that certain Agreement and Plan of Merger, dated as of November 6, 2016 (the “Merger Agreement”), by and among Parent Guarantor, New Reseller, and Reef Acquisition Co. (the “Merger Sub”), a Minnesota corporation and a wholly-owned subsidiary of Parent Guarantor, pursuant to which the Merger Sub will be merged with and into New Reseller, with New Reseller surviving as a wholly-owned subsidiary of Parent Guarantor;

WHEREAS, prior to the acquisition of New Reseller by Parent Guarantor, New Reseller and CPC entered into that certain Credit Agreement dated as of July 17, 2013, as amended prior to the date hereof (the “Existing Datalink Credit Agreement”), pursuant to which CPC offered to New Reseller, among other things, a channel finance facility of up to a maximum aggregate amount of $75,000,000;

WHEREAS, New Reseller desires to join the Existing Credit Agreement (as defined below) as a Reseller therein;

WHEREAS, certain of the Resellers, certain lenders and the Agents have entered into the Second Amended and Restated Credit Agreement dated as of June 23, 2016 (as the same may have been amended, supplemented or otherwise modified prior to the date hereof, the “Existing Credit Agreement”), the Amended and Restated Security Agreement (Resellers), dated as of April 26, 2012 (as the same has been amended, supplemented or otherwise modified prior to the date hereof, the “Resellers Security Agreement”), and the Amended and Restated Pledge Agreement (Resellers) dated as of April 26, 2012 (as the same has been amended, supplemented or otherwise modified prior to the date hereof, the “Resellers Pledge Agreement”);

WHEREAS, Parent Guarantor and WFCF have entered into the Amended and Restated Parent Guaranty dated as of April 26, 2012 (as the same has been amended, supplemented or otherwise modified prior to the date hereof, the “Parent Guaranty”), the Amended and Restated Security Agreement dated as of April 26, 2012 (as the same has been amended, supplemented or otherwise modified prior to the date hereof, the “Parent Security Agreement”), and the Amended and Restated Parent Guarantor Pledge

Agreement dated as of April 26, 2012 (as the same has been amended, supplemented or otherwise modified prior to the date hereof, the “Parent Pledge Agreement”);

WHEREAS, the Subsidiary Guarantors and WFCF have entered into the Amended and Restated Subsidiary Guaranty dated as of April 26, 2012 (as the same has been amended, supplemented or otherwise modified prior to the date hereof, the “Subsidiary Guaranty”), the Amended and Restated Subsidiary Security Agreement dated as of April 26, 2012 (as the same has been amended, supplemented or otherwise modified prior to the date hereof, the “Subsidiary Security Agreement”), and the Amended and Restated Subsidiary Pledge Agreement dated as of April 26, 2012 (as the same has been amended, supplemented or otherwise modified prior to the date hereof, the “Subsidiary Pledge Agreement”);

WHEREAS, in connection with the Existing Credit Agreement, the Reaffirming Parties entered into the Loan Documents (as such term is defined in the Existing Credit Agreement) set forth in Annex I hereto (such documents, together with the other Loan Documents to which the Reaffirming Parties are subject (each as amended, restated, supplemented or otherwise modified), the “Reaffirmed Loan Documents”);

WHEREAS, the Resellers, the Lenders (as defined below), and the Agents, have agreed to amend the Existing Credit Agreement as set forth herein, to join New Reseller as a Reseller, and to include all obligations of Datalink Corporation to CPC under the Existing Datalink Credit Agreement (defined below) as “Loan Obligations” under the terms of the Existing Credit Agreement (such amendment together with the Existing Credit Agreement, the “Credit Agreement”);

WHEREAS, this Reaffirmation, Amendment and Joinder is being executed and delivered pursuant to Section 17.2 of the Credit Agreement; and

WHEREAS, the Reaffirming Parties wish to reaffirm the terms and conditions of the Reaffirmed Loan Documents to which they are a party.

NOW, THEREFORE, in consideration of the premises set forth above, the parties hereto hereby agree as follows:

A. Amendment. Subject to the satisfaction of the conditions precedent set forth in Section 4 below, the Existing Credit Agreement is hereby amended as follows:

(i) the following new Section 17.17, “Datalink Loan Obligations” is hereby inserted in the appropriate numerical order therein:

“17.17 Datalink Loan Obligations”. The Datalink Loan Obligations are (a) assumed by the Resellers, jointly and severally, as Loan Obligations as of the date of the Second Omnibus Reaffirmation Agreement, Amendment and Joinder to Loan Documents, dated as of January 6, 2017, by and among the Resellers, the Parent Guarantor, the Subsidiary Guarantors, CPC, the Administrative Agent and the Lenders party thereto (the “Datalink Loan Obligations Effective Date”), and (b) all Datalink Loan Obligations shall be deemed to be Loan Obligations under the terms hereof as of the Datalink Loan Obligations Effective Date.”

(ii) the following definition is added to Exhibit B in the appropriate alphabetical order therein:

“‘Datalink Loan Obligations’ – means all ‘Obligations’ as defined in, and existing and outstanding as of the Datalink Loan Obligations Effective Date, the Existing Datalink Credit Agreement,” which as of January 5, 2017 at 5:00 p.m. Mountain time equal $28,034,204.40;

(iii) the following definition is added to Exhibit B in the appropriate alphabetical order therein:

“‘Existing Datalink Credit Agreement’ – means that certain Credit Agreement between Datalink Corporation, a Minnesota corporation, and CPC dated as of July 17, 2013, as amended.”;

(iv) the definition of “Loan Obligations” within Exhibit B to the Existing Credit Agreement is hereby amended by replacing clause “(a)” of the definition with the following new clause “(a)”:

“(a) the principal of and premium, if any, and interest (including interest accruing during the pendency of any bankruptcy, insolvency, receivership or other similar proceeding, regardless of whether allowed or allowable in such proceeding) on the (i) Loans made to the Resellers and (ii) Datalink Loan Obligations, when and as due, whether at maturity, by acceleration, upon one or more dates set for prepayment or otherwise, and”;

(v) the definition, “Resellers” within Exhibit B to the Existing Credit Agreement is hereby amended by replacing the existing definition with the following new definition:

“‘Resellers’ – means Calence, LLC, a Delaware limited liability company, Insight Direct USA, Inc., an Illinois corporation, Insight Public Sector, Inc., an Illinois corporation, and Datalink Corporation (as successor by merger with Reef Acquisition Co., a Minnesota corporation), a Minnesota corporation.”; and

(vi) the following definition of “Mortgaged Real Property” is hereby inserted into Exhibit B of the Existing Credit Agreement:

“‘Mortgaged Real Property’ means each parcel of real property subject to, or required to be subject to, pursuant to any Loan Document, any mortgage, deed of trust or other agreement which conveys or evidences a Lien in such real property in favor of the Administrative Agents for the benefit of the Holders of Secured Obligations.”

(vii) the following is hereby inserted at the end of Section 10.5:

“If at any time any Mortgaged Real Property is located in a designated special “flood hazard area” in any Flood Insurance Rate Map published by the Federal Emergency Management Agency (or any successor agency), the Loan Parties will (i) maintain fully paid flood hazard insurance on such Mortgaged Real Property on such terms and in such amounts as required by The National Flood Insurance Reform Act of 1994, and (ii) provide within thirty (30) days (or such longer period as the Administrative Agents shall agree) evidence of such coverage as the Administrative Agents may reasonably request, including, without limitation, (x) copies of any such flood insurance policies naming the Collateral Agent as loss payee and (y) the applicable Loan Party’s application for a flood insurance policy plus proof of premium payment, in each case to the extent requested by the Administrative Agents.”; and

(viii) the following is hereby added as a separate paragraph to the end of Section 10.9:

“Notwithstanding the foregoing requirements of this Section 10.09, the Parent Guarantor shall promptly give notice to the Administrative Agents (which shall promptly deliver such notice to the Lenders) in the event that any real property of any Loan Party qualifies as Mortgaged Real Property. The Loan Parties shall provide all information reasonably requested by the Administrative Agents (or by any Lender upon written notice by such Lender to the Parent Guarantor and the Administrative Agents) to conduct flood due diligence and flood insurance compliance with respect to any Mortgaged Real Property. Notwithstanding anything herein to the contrary, no mortgage, deed of trust or other agreement which conveys or evidences a Lien in such real property in favor of the Collateral Agent for the benefit of the Holders of Secured Obligations will be recorded (and neither the Administrative Agents or the Required Lenders shall request that any Loan Party grant such a Lien on such real property) with respect to any real property of the Loan Parties pursuant to this Section 10.09 or under any other Loan Document unless the Lenders shall have received (i) written notice thereof at least 30 days prior to such recording and (ii) the other deliverables required pursuant to the immediately preceding sentence.”; and

(ix) Schedule 9.6 to the Existing Credit Agreement is hereby amended in its entirety pursuant to the Schedule set forth in Exhibit A hereto.

B. Joinder of New Reseller to Loan Documents.

(i) Resellers Security Agreement. By its execution of this Reaffirmation, Amendment and Joinder, the undersigned, New Reseller, agrees to agrees to become, and does hereby become, a Grantor under the Resellers Security Agreement and agrees to be bound by such Agreement as if originally a party thereto. In addition, to secure the prompt and complete payment, observance and performance of the Secured Obligations (as defined in the Resellers Security Agreement), New Reseller hereby grants to the Collateral Agent, for the benefit of itself, the Administrative Agents and the Holders of the Secured Obligations, a security interest in all of its right, title and interest in and to the “Collateral” (as such term is defined in the Resellers Security Agreement), whether now owned or existing or hereafter arising or acquired and wheresoever located. By and giving effect to its execution of this Reaffirmation, Amendment and Joinder, the undersigned represents and warrants as to itself that all of the representations and warranties contained in the Resellers Security Agreement are true and correct in all respects as of the date hereof. New Reseller represents and warrants that the schedules attached hereto as Exhibit B are true and correct in all respects as of the date hereof and such schedules set forth all information required to be scheduled under the Resellers Security Agreement as of the date hereof. New Reseller shall, to the extent required pursuant to the Resellers Security Agreement, take all steps necessary to perfect, in favor of the Collateral Agent, a first-priority security interest in and lien against New Reseller’s Collateral, including, without limitation, to the extent required pursuant to the Resellers Security Agreement, taking all steps necessary to properly perfect the Collateral Agent’s interest in any uncertificated equity or membership interests. New Reseller hereby authorizes the Collateral Agent to file one or more financing or continuation statements and amendments thereto, disclosing the security interest granted to the Collateral Agent under this Reaffirmation, Amendment, and Joinder, and the Collateral Agent agrees to notify New Reseller when such a filing has been made. New Reseller hereby authorizes

the Collateral Agent to file financing statements describing the collateral covered thereby as “all of the debtor’s personal property or assets, whether now owned or existing or hereafter acquired or arising” or any other wording the Collateral Agent, in its sole discretion, chooses, notwithstanding that such wording may be broader in scope than the Collateral described in this Reaffirmation, Amendment and Joinder.

(ii) Resellers Pledge Agreement.

(a) By its execution of this Reaffirmation, Amendment and Joinder, New Reseller hereby agrees that (i) the capital stock of the corporations and membership interests of the limited liability company listed on the schedules attached hereto as Exhibit C be pledged to the Collateral Agent as additional collateral pursuant to Sections 1.1 and 1.2 of the Resellers Pledge Agreement, (ii) such property shall be considered Pledged Stock and Pledged Membership Interests under the Resellers Pledge Agreement and be a part of the Pledged Collateral pursuant to Sections 1.1 and 1.2 of the Resellers Pledge Agreement, and (iii) each such corporation and limited liability company listed on Exhibit C hereto shall be considered a Pledged Subsidiary for purposes of the Resellers Pledge Agreement.

(b) By its execution of this Reaffirmation, Amendment and Joinder, New Reseller agrees to agrees to become, and does hereby become, a Pledgor under the Resellers Pledge Agreement and agrees to be bound by such Resellers Pledge Agreement as if originally a party thereto and that the representations and warranties contained in Section 5 of the Resellers Pledge Agreement are true and correct in all respects as of the date hereof, except to the extent any such representation or warranty is stated to relate solely to an earlier date, in which case such representation or warranty was true and correct on and as of such earlier date, in each case after taking into account the pledge of the additional Pledged Stock and Pledged Membership Interests relating hereto.

(a) the Agents shall have received counterparts of this Reaffirmation, Amendment and Joinder duly executed by the Resellers, the Parent Guarantor, the Subsidiary Guarantors and the Lenders required to execute and deliver this Reaffirmation, Amendment and Joinder in order to give effect hereto;

(b) the Datalink Acquisition shall have been consummated;

(c) the Agents shall have received such Secretary Certificates and Resolutions as are customary for transactions of this type; and

(d) the Agents shall have received a certificate, dated as of the date hereof, and signed by a Financial Officer, (i) certifying that as of the date hereof, after giving effect to the transactions to be consummated on the date hereof and the payment and accrual of all fees, costs and expenses in connection therewith, the Parent Guarantor and its Subsidiaries, on a consolidated basis, are and will be Solvent and (ii) demonstrating that the Parent Guarantor and its Subsidiaries are in compliance with the financial covenants contained in Section 11.10 of the Credit Agreement immediately after giving effect to the Datalink Acquisition (determined on a Pro Forma Basis recomputed as of the last day of the most recently ended fiscal quarter of the Parent Guarantor for which financial statements are available, as if the Datalink Acquisition (and any related incurrence or repayment of Indebtedness) had occurred on the first day of each relevant period for testing such compliance).

(a) Upon the effectiveness of this Reaffirmation, Amendment and Joinder, on and after the date hereof, each reference in the Credit Agreement to “this Agreement,” “hereunder,” “hereof,” “herein” or words of like import shall mean and be a reference to the Credit Agreement, as amended and modified hereby.

(b) Except as expressly set forth herein, (i) the execution, delivery and effectiveness of this Reaffirmation, Amendment and Joinder shall neither operate as a waiver of any rights, power or remedy of the Agents or the Lenders under the Credit Agreement or any other documents executed in connection with the Credit Agreement, nor constitute a waiver of any provision of the Credit Agreement nor any other document executed in connection therewith and (ii) the Credit Agreement and all other documents, instruments and agreements executed and/or delivered in connection therewith and are hereby ratified and confirmed.

(c) Upon the effectiveness of this Reaffirmation, Amendment and Joinder, the Obligations existing and outstanding as of January 5, 2017 at 5:00 p.m. Mountain time equal $214,804,374.46.

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IN WITNESS WHEREOF, this Reaffirmation, Amendment and Joinder has been duly executed and delivered on the date first above written.

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ACKNOWLEDGED AND AGREED:

CASTLE PINES CAPITAL LLC,

as Administrative Agent and a Lender under the Credit Agreement and

In its capacity under the Datalink Credit Agreement

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ANNEX I

Reaffirmed Loan Documents

EXHIBIT A

Amended Schedule to Credit Agreement

SCHEDULE 9.6

Litigation

None.

EXHIBIT B

Amended Schedules to Resellers Security Agreement

SCHEDULE 1

TO

AMENDED AND RESTATED SECURITY AGREEMENT

Grantor Organizational Information

1. 6820 South Harl Avenue, Tempe, Arizona 85283

2. 910 West Carver Road, Tempe, Arizona 85284

1. 10050 Crosstown Circle, Suite 500, Eden Prairie, Minnesota 55344

SCHEDULE 1-A

TO

AMENDED AND RESTATED SECURITY AGREEMENT

Pledged Debt:

None.

SCHEDULE 2

TO

AMENDED AND RESTATED SECURITY AGREEMENT

SCHEDULE 2-B

TO

AMENDED AND RESTATED SECURITY AGREEMENT

SCHEDULE 3

TO

AMENDED AND RESTATED SECURITY AGREEMENT

Intellectual Property

I. Trademarks

II. Patents

III. COPYRIGHTS

None

EXHIBIT C

Schedule 1 to Amended and Restated Pledge Agreement – Pledged Subsidiaries

Pledged Stock

Pledged Membership Interests

Pledged Partnership Interests

None.

EXHIBIT D

Amended Schedules to Parent Guarantor Pledge Agreement

SCHEDULE I

PLEDGED SUBSIDIARIES

Pledged Stock

Pledged Membership Interests

Pledged Partnership Interests

None.