Officejet K7100 and printer maintenance
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Here is the solution for the error: "Encryption Credentials have expired" when attempting to print or scan from Mac OS or iOS devices: Click here to view the troubleshooting steps!

Print Quality Diagnostics Page: Helps troubleshoot print quality issues, such as broken lines, faded or missing colors, and streaks.
Align Printheads: Align the printhead to perform an alignment after installing new cartridges or when print quality is unsatisfactory.
Clean Printheads: Clean the printhead to resolve print quality issues.
Print Diagnostic Information: Information about the status and condition of your printer.