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        <issuerName>MSG NETWORKS INC.</issuerName>
        <issuerTradingSymbol>MSGN</issuerTradingSymbol>
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            <rptOwnerCik>0001653195</rptOwnerCik>
            <rptOwnerName>DARINO-GORSKI DAWN</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>11 PENNSYLVANIA PLAZA</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10001</rptOwnerZipCode>
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            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>SVP, Controller &amp; PAO</officerTitle>
        </reportingOwnerRelationship>
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    <footnotes>
        <footnote id="F1">Each restricted stock unit (&quot;RSU&quot;) was granted on August 28, 2018 under the MSG Networks Inc. (&quot;Networks&quot;) 2010 Employee Stock Plan (the &quot;2010 Employee Stock Plan&quot;), as amended, and represents a right to receive one share of Class A Common Stock or the cash equivalent thereof. One-third of the RSUs vested and were settled on September 13, 2019. The remaining two-thirds of the RSUs will vest on September 15, 2020 and September 15, 2021.</footnote>
        <footnote id="F2">Represents RSUs of Networks withheld to satisfy tax withholding obligations in connection with the vesting of RSUs described in footnotes 1 and 3, exempt under Rule 16b-3.</footnote>
        <footnote id="F3">Each RSU was granted on September 15, 2016 under the 2010 Employee Stock Plan, as amended, and represents a right to receive one share of Class A Common Stock or the cash equivalent thereof. One-third of the RSUs vested and were settled on September 15, 2017. One-third of the RSUs vested and were settled on September 14, 2018. One-third of the RSUs vested and were settled on September 13, 2019.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Mark C. Cresitello, Attorney-in-Fact for Dawn Darino-Gorski</signatureName>
        <signatureDate>2019-09-17</signatureDate>
    </ownerSignature>
</ownershipDocument>
