Error Code: UU_400_EB000U0701

[Nik3049]

Error Code: UU_400_EB000U0701

[VikramTheGreat · Accepted solution]

Hi @Nik3049,

Welcome to the HP Support Community.
 

Thank you for posting your query. I will be glad to help you.

The error UU_400_EB000U0701 is typically related to a registration or web services issue, most commonly seen when trying to register the printer to HP services (such as HP Smart / Instant Ink/account linking).

To help you better, may I first confirm:

• Are you currently trying to register the printer or sign in through HP Smart? 
• Does the error appear during setup, account login, or enabling Web Services? 

Steps to resolve this issue

Step 1: Restart the printer and the network

• Turn OFF the printer 
• Restart your WiFi router 
• Turn the printer back ON after 1–2 minutes 

Step 2: Check Web Services

• Open HP Smart 
• Select your printer 
• Go to Advanced Settings (EWS page) 
• Look for Web Services 

If enabled:

• Turn it OFF, then turn it ON again 

If not enabled:

• Enable it and try registering again 

Step 3: Remove and re-add the printer in HP Smart

• Open HP Smart 
• Remove the printer from the app 
• Click + Add Printer and set it up again 

Make sure you are signed into your HP account before adding.

Step 4: Reset Web Services

From the printer’s Embedded Web Server (EWS):

• Go to the Web Services tab 
• Select Remove Web Services 
• Then enable it again 

This refreshes the connection with HP servers.

Step 5: Check date, time, and region

• Ensure your printer and device have the correct date/time and region 
• Incorrect settings can cause registration errors

I hope this helps.

Take care and have an amazing day!

[Nik3049]

Thank you. I really appreciate your help. Your solution was substantial. I applied it and it worked out great. Thank you again for sharing your knowledge. 

[VikramTheGreat]

Hi @Nik3049,

Thank you so much for your kind words. We truly appreciate you taking the time to share this.
 

We’re really glad to hear that the solution worked well for you and that everything is up and running smoothly now. It means a lot to know the guidance was helpful.
 

If you need any assistance in the future, please don’t hesitate to reach out. We’re always here to help.
 

Thank you for choosing HP.