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1. Open Adobe Acrobat and navigate to 'Edit' at the top. Click on 'Preferences'.  
2. Under Categories, click on 'Signatures'. Click 'More' next to 'Identities & Trusted Certificates'.
3. Click 'Add ID'.
   
4. Select ‘A new digital ID I want to create now'. Click Next.
   
5. Select 'New PKCS#12 digital ID file'. Click Next.
   
6. Enter your identity information to be used when generating the self-signed certificate. Click Next.
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7. Do not change the 'File Name' path. Enter a 'Password' for your Digital ID and click 'Finish'.

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