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When the Machine Cannot Be Operated Due to a Problem with the User Certificate

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Message	Cause	Solution
`“The destination cannot be selected because its encryption certificate is not currently valid.”`	The user certificate (destination certificate) has expired.	A new user certificate must be installed. For details about the user certificate (destination certificate), see "Configuring S/MIME", Security Guide.
`“The group destination cannot be selected because it contains a destination with a encryption certificate that is not currently valid.”`	The user certificate (destination certificate) has expired.	A new user certificate must be installed. For details about the user certificate (destination certificate), see "Configuring S/MIME", Security Guide.
`“Transmission cannot be performed because the encryption certificate is not currently valid.”`	The user certificate (destination certificate) has expired.	A new user certificate must be installed. For details about the user certificate (destination certificate), see "Configuring S/MIME", Security Guide.
`“XXX cannot be YYY because the device certificate used for the S/MIME signature is not currently valid.”` (XXX and YYY indicate the user action.)	The device certificate (S/MIME) has expired.	A new device certificate (S/MIME) must be installed. For details about how to install a device certificate (S/MIME), see "Communication Paths via a Device Certificate", Security Guide.
`“XXX cannot be YYY because there is a problem with the device certificate used for the S/MIME signature. Check the device certificate.”` (XXX and YYY indicate the user action.)	There is no device certificate (S/MIME), or the certificate is invalid.	For details about the device certificate (S/MIME), see "Protecting Communication Paths via a Device Certificate", Security Guide.
`“XXX cannot be YYY because the Digital Signature's device certificate is not currently valid.”` (XXX and YYY indicate the user action.)	The device certificate (PDF with digital signature or PDF/A with digital signature) has expired.	A new device certificate (PDF with digital signature or PDF/A with digital signature) must be installed. For details about how to install a device certificate (PDF with digital signature or PDF/A with digital signature), see "Configuring PDFs with Electronic Signatures", Security Guide.
`“XXX cannot be YYY because there is a problem with the Digital Signature's device certificate. Check the device certificate.”` (XXX and YYY indicate the user action.)	There is no device certificate (PDF with digital signature or PDF/A with digital signature), or the certificate is invalid.	A new device certificate (PDF with digital signature or PDF/A with digital signature) must be installed. For details about how to install a device certificate (PDF with digital signature or PDF/A with digital signature), see "Configuring PDFs with Electronic Signatures", Security Guide.

If an e-mail cannot be sent and a message appears which states that there is a problem with the device certificate or user certificate, a new certificate must be installed. For details about how to install a new certificate, see "Configuring S/MIME" or "Protecting Communication Paths via a Device Certificate", Security Guide.