Some time we encounters and face problem to remove question mark from digital signature in pdf. This takes place when the system has not yet validated the digital certificate and digital signature that are connected with the PDF file. Let us know the steps how to validate the Signature.
Steps for remove question mark in PDF
- Steps-1-Open the pdf file and Right click on the Question Mark showing the Validity Unknown.
- Steps-2-Then Click on Show Signature Properties.
- Steps-3-After that Click on Show Signer’s Certificate & then Select Trust.
- Steps-4 Click Add to Trusted Identities & Click OK. Then you find the Green Right Mark instead of Question Mark
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