Adobe install DUO certificate

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  Step 1

  Open a file which should contain a certificate from DUO.
  The blue bar at the top of the file warns about a not validated certificate.

  Click on “Signature Panel” on the right side.

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  Step 2

  Right click the certificate that is shown on the left side.

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  Step 3

  Click “Show Signature Properties”.

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  Step 4

  Click on “Show Signer’s Certificate…”.

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  Step 5

  Open the tab “Trust”.

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  Step 6

  Click “Add to Trusted Certificates…”.

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  Step 7

  Click “OK”.

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  Step 8

  Tick the box “Use this certificate as a trusted root” and click “OK”.

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  Step 9

  The duo.nl certificate should now be installed in Acrobat Reader.

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• Step 10

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Last modified: 25/06/2021