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Add an exclusion to Windows Security

To check if Windows Defender is blocking SigmaXLIf 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:

Click Start Image Removed > Settings Image Removed.
Click Privacy & security Image Removed:
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bgColor#F7F9FF


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

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



  3. Click (1)  Windows Security > (2) Image RemovedImage Added Virus & threat protection:

    Tip

    In 

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

.

  1. :

    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

.

  1. :

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bgColor#F7F9FF
Expand
titleWindows 11 Instructions
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. Image Added


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

    Image Added

  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:

    Image Added

  6. SigmaXL is now being excluded from Windows Defender.



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bgColor#F7F9FF


Expand
titleWindows 10 11 Instructions
  1. Click Start > Settings:
  2. Click Update & Security:
  3. Click Windows Security:
  4. Click Virus & threat protection:
  5. Under Click Image Added Start  > Image Added Settings.

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

    Image Added

  7. 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


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

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

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  10. Click (1) + Add an exclusion, Exclusion and then select from files, folders, file types, or process. A folder exclusion will apply to all subfolders within the folder as well select (2) Folder:

    Image Added

  11. 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

  12. SigmaXL is now being excluded from Windows Defender.



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