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Add an exclusion to Windows Security

To check if Windows Defender is blocking SigmaXL:

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bgColor#87cefatitleWindows 10 Instructions

If Windows Security has incorrectly flagged SigmaXL as untrusted, SigmaXL can be added to Microsoft Defender's exclusions list. 

The most common symptom of SigmaXL being blocked by security software is the following error:

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Warning
titleAdministrator Privileges are Required

Note that you must be a system administrator to complete the steps below.

Select you version of Windows below:

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  • Click Start > Settings:
    • Click
    Expand
    titleWindows 10
    Instructions
    1. Click Image Added Start  > Image Added Settings.

    2. Scroll down and click Image Added Update & Security:

      Image Added

    3. Click (1) Image Added Windows Security

      :
    4. Click Virus & threat protection
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    1.  > (2) Image Added Virus & threat protection:

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      Tip

      In Image Added Virus & threat protection settings, select Image Added Protection history to view the blocked actions:

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      Each item in the list can be clicked to expand and to review if SigmaXL/Excel is being blocked by Windows security settings:

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    2. Under Image Added Virus & threat protection settings, select Manage settings:

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    3. Scroll down to Exclusions and click Add or remove exclusions:

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    4. Click (1) + Add an exclusion, and select (2) Folder:

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    5. Navigate to the SigmaXL folder for your installed bit-version, (1) single-click the folder to highlight it, and click the (2) Select Folder button:

      For 32-bit: C:\Program Files (x86)\SigmaXL:

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      For 64-bit: C:\Program Files\SigmaXL:

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    6. SigmaXL is now being excluded from Windows Defender.



  • Step One
  • Step Two
    • Step Three
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    Expand
    titleWindows 11 Instructions
    1. Click Start > Settings:
    2. Click Privacy & security:

    If Windows Security has incorrectly flagged SigmaXL as untrusted, you can prevent it from blocking it by adding the folder to the exclusions list. 

    1. Click Image Added Start  > Image Added Settings.

    2. Click (1) Privacy & security > (2) Image Added Windows Security:

      Image Added

    3. In Windows Security, click Image Added Virus & threat protection:

      Image Added

      Tip

      In Image Added Virus & threat protection settings, select Image Added Protection history to view the blocked actions:

      Image Added

      Each item in the list can be clicked to expand and to review if SigmaXL/Excel is being blocked by Windows security settings:

      Image Added


    4. Under Image Added Virus & threat protection settings, select Manage settings:

      Image Added

    5. Scroll down to Exclusions and select Add or remove exclusions:

      Image Added

    6. Click (1) + Add an Exclusion and select (2) Folder:

      Image Added

    7. Navigate to the SigmaXL folder for your installed bit-version, (1) single-click the folder to highlight it, and click the (2) Select Folder button:

      For 32-bit: C:\Program Files (x86)\SigmaXL:

      Image Added

      For 64-bit: C:\Program Files\SigmaXL:

      Image Added

    8. SigmaXL is now being excluded from Windows Defender.



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