Current location - Quotes Website - Signature design - Windows cannot verify the digital signature of this file.
Windows cannot verify the digital signature of this file.
The reasons for this situation are file corruption, the issuer is not verified, certificate problems and so on.

1. file is damaged: there may be errors in the transmission or storage of the file, resulting in changes in the content, and its integrity cannot be verified by comparing with the original signature.

2. Issuer not verified: The digital signature of the file comes from an unknown or untrusted certificate authority, and the Windows operating system may not be able to verify its authenticity.

3. Certificate problem: The digital certificate used to sign the document may have expired.