ErrorCodeDoctor
HP Printer (OfficeJet) Offline / Connection Error / Unable to Connect / 0x6100004a error code
The Offline, Connection Error, or Unable to Connect message means your HP OfficeJet printer cannot be reached by your computer or mobile device over Wi-Fi or the network. This is most commonly caused by a changed Wi-Fi password, IP address conflict, weak Wi-Fi signal, or the printer being assigned to a different network. Restarting the printer and router resolves most connection issues.
Common causes
- Wi-Fi password was changed and the printer is still using the old credentials
- Router was replaced or the network name changed
- IP address conflict between the printer and another device on the network
- Printer is connected to a different Wi-Fi network than the computer
- Weak Wi-Fi signal causing an unstable connection
- Wireless isolation is enabled on the router preventing printer communication
How to fix it
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1
Restart the printer and the router by turning both off and back on
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2
Make sure the printer is connected to the same Wi-Fi network as the computer or mobile device
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3
If the Wi-Fi password recently changed run the wireless setup again using the HP Smart app
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4
Print a Network Configuration Page from the printer settings and verify the IP address
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5
If there is an IP address conflict assign a static IP to the printer through the router settings
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6
Check that wireless isolation is not enabled on the router
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7
If the printer remains offline try removing it from the HP app and re-adding it
Related HP Printer (OfficeJet) error codes
Paper Jam / 0x6100004a
Paper is jammed inside the printer or the print carriage is blocked
Printer Failure / 0x610000ff
A general printer failure was detected — the printer needs to be reset
Ink System Failure / Print System Problem / 0xc19a0003 / 0xc19a0020
A problem was detected with the ink system or printhead
Printhead Problem / Printhead Missing or Failed / 0xc19a0003
The printer cannot detect or initialize the printhead
Offline / Connection Error / Unable to Connect / 0x6100004a error — frequently asked questions
What does the Offline / Connection Error / Unable to Connect / 0x6100004a error mean on a HP printer (officejet)?
The printer cannot be reached over the network or Wi-Fi connection
What causes the Offline / Connection Error / Unable to Connect / 0x6100004a error?
The Offline / Connection Error / Unable to Connect / 0x6100004a error is usually caused by: Wi-Fi password was changed and the printer is still using the old credentials; Router was replaced or the network name changed; IP address conflict between the printer and another device on the network; Printer is connected to a different Wi-Fi network than the computer; Weak Wi-Fi signal causing an unstable connection; Wireless isolation is enabled on the router preventing printer communication.
Can I fix the Offline / Connection Error / Unable to Connect / 0x6100004a error myself?
Yes — this is rated an easy fix that most people can do themselves, typically in 5–15m.
How much does it cost to fix the Offline / Connection Error / Unable to Connect / 0x6100004a error?
Fixing the Offline / Connection Error / Unable to Connect / 0x6100004a error on a HP printer (officejet) typically costs $0, depending on parts and whether you do it yourself or hire a technician.
Is it safe to keep using my printer (officejet) with the Offline / Connection Error / Unable to Connect / 0x6100004a error?
In most cases yes, but it's best to address the Offline / Connection Error / Unable to Connect / 0x6100004a error soon — see the fix steps below to resolve it.