Can't access Embedded Web Server on HP Officejet Pro 8630: "System Error"

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Fixed the problem myself, but I'm posting this for the benefit of future readers who run into this problem. I found the answer here: https://community.spiceworks.com/topic/1155387-how-to-factory-reset-hp-officejet-8610-printer-not-thru-panel

Tap the Back button four times to open the Support Menu, and under Resets Menu, select Semi-full reset. The printer will shut down automatically, and you'll go through the first-time setup when you turn it back on again.

Contrary to what the name of the command suggests, this is a factory reset; most settings will be lost. However, at least you do not need a new set of SETUP cartridges as the printhead is not new, and a few settings, such as functions administratively disabled through the EWS, are retained. The printer's page count is also retained.

~~Sadly, the problem has recurred only a few days after the factory reset. I am not able to determine why. I'll have to wait for an answer from someone else...~~

...and it looks like the issue is gone. Might be some weird bug in the EWS, who knows? I'd have to contact HP to sort this out.

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bwDraco

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Updated on September 18, 2022

Comments

bwDraco almost 2 years

My HP Officejet Pro 8630 has started giving me this error when I try to access the Embedded Web Server (EWS) by entering the printer's IP address in a Web browser:

System Error

An error has occurred.

Neither a network reset nor a firmware update addressed the issue. Furthermore, the printer hung while I ran a factory reset from the Settings menu, forcing me to manually power it off. I could not find any relevant diagnostic information in the printer software.

How do I fix this?

(This question should apply to the entire Officejet Pro 8600 family, including the 8610, 8620, and 8630, and variants thereof.)