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Epson WF-C4810 Series Manual

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Messages Cause/What to do
Invalid le. Cause:
You are not importing a certicate le in X509 format.
What to do:
Make sure that you are selecting the correct certicate sent by a trusted certicate
authority.
Cause:
The le you have imported is too large. The maximum le size is 5KB.
What to do:
If you select the correct le, the certicate might be corrupted or fabricated.
Cause:
The chain contained in the certicate is invalid.
What to do:
For more information on the certicate, see the website of the certicate
authority.
Cannot use the Server Certicates that
include more than three CA
certicates.
Cause:
The certicate le in PKCS#12 format contains more than 3 CA certicates.
What to do:
Import each certicate as converting from PKCS#12 format to PEM format, or
import the certicate le in PKCS#12 format that contains up to 2 CA certicates.
The certicate has expired. Check if the
certicate is valid, or check the date
and time on your printer.
Cause:
The certicate is out of date.
What to do:
❏If the certicate is out of date, obtain and import the new certicate.
❏If the certicate is not out of date, make sure the printer's date and time are set
correctly.
Private key is required. Cause:
There is no paired private key with the certicate.
What to do:
❏If the certicate is the PEM/DER format and it is obtained from a CSR using a
computer, specify the private key le.
❏If the certicate is the PKCS#12 format and it is obtained from a CSR using a
computer, create a le that contains the private key.
Cause:
You have re-imported the PEM/DER certicate obtained from a CSR using Web
Cong.
What to do:
If the certicate is the PEM/DER format and it is obtained from a CSR using Web
Cong, you can only import it once.
Administrator Information
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Advanced Security Settings
>
Solving Problems for Advanced Security
378
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