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Common problems for Connectivity Issues
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‎10-20-2022 02:22 AM

HP Recommended
Product: HP Color LaserJet Pro MFP M283fdw

Hi
I always used Let'sEncrypt-issued certificates with my printer.
But now printer refused to update renewed certificate, reporting "The format of the file is invalid" message.
Certificate itself is valid, with proper file format.
The printer have the most recent firmware update. Could it cause the issue? How to resolve it? Could it me, that now HP firmware has more strict requirements to the certificate? I.e. - wildcard certificates are not accepted anymore, or stuff like that

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