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    Cloud Storage Gateway:How to fix SMB share mounting errors on Windows Server 2019?

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    Cloud Storage Gateway:How to fix SMB share mounting errors on Windows Server 2019?

    Last Updated:Jan 12, 2026

    This topic describes how to resolve mount failures for SMB shares on Windows Server 2019.

    Problem

    When you try to mount an SMB share, the operation fails as shown in the following figure.p170732

    Solution

    1. On your local Windows client, press Win+R to open the Run dialog box, enter gpedit.msc, and click OK.

    2. In the left-side navigation pane of the Local Group Policy Editor window, navigate to Computer Configuration > Administrative Templates > Network > Lanman Workstation.

    3. In the list of settings, double-click Enable insecure guest logons.

    4. In the Enable insecure guest logons dialog box, select Enabled, and then click Apply.

      p169871

    5. Try mounting the SMB share again.

    6. If the mount still fails, restart the Windows client to clear the cache, and then try again.