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Excel and digitally signed add-ins

Excel and digitally signed add-ins

Owned by Paul Petrin
Last updated: Aug 23, 2023

Excel is unable to verify digitally signed applications

Previous versions of Microsoft Excel may generate a warning that indicates SigmaXL is not digitally signed. 

The current version of SigmaXL contains a valid, up to date Digicert signature.

The issue can cause inaccurate warning messages when attempting to launch SigmaXL or, depending on Excel security settings, may even prevent the SigmaXL ribbon from loading altogether.

If SigmaXL does not load, attempt the following:


If the options above are not available, you must contact your internal IT department to do this on your behalf.

For additional information contact support@sigmaXL.com


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