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        <issuerName>MSG NETWORKS INC.</issuerName>
        <issuerTradingSymbol>MSGN</issuerTradingSymbol>
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            <rptOwnerName>Burian Lawrence J.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>11 PENNSYLVANIA PLAZA</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10001</rptOwnerZipCode>
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            <officerTitle>EVP and General Counsel</officerTitle>
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    <footnotes>
        <footnote id="F1">Each performance restricted stock unit (&quot;PSU&quot;) was granted on September 15, 2016 under the MSG Networks Inc. (&quot;Networks&quot;) 2010 Employee Stock Plan (the &quot;2010 Employee Stock Plan&quot;), as amended. The PSUs vested on August 29, 2019 upon the achievement of performance criteria established at the time of grant.</footnote>
        <footnote id="F2">Represents PSUs of Networks withheld to satisfy tax withholding obligations in connection with the vesting of PSUs described in footnote 1 above, exempt under Rule 16b-3.</footnote>
        <footnote id="F3">Each restricted stock unit (&quot;RSU&quot;) was granted on September 1, 2017 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 1, 2018. One-third of the RSUs vested and were settled on September 1, 2019. The remaining one-third of the RSUs will vest on September 1, 2020.</footnote>
        <footnote id="F4">Represents RSUs of Networks withheld to satisfy tax withholding obligations in connection with the vesting of RSUs described in footnote 3 above, exempt under Rule 16b-3.</footnote>
        <footnote id="F5">Each RSU is granted 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.</footnote>
        <footnote id="F6">The RSUs vest and are settled in three equal installments on September 15, 2020, September 15, 2021 and September 15, 2022.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Mark C. Cresitello, Attorney-in-Fact for Lawrence J. Burian</signatureName>
        <signatureDate>2019-09-03</signatureDate>
    </ownerSignature>
</ownershipDocument>
