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- HP Community
- Printers
- Mobile Printing & Cloud Printing
- Unable to sign in from HP Smart app - Error Code: UA_400_EB...

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05-02-2022 07:56 AM
After receving a Mimecast report saying my ePrints were blocked, I am trying to sign into my existing account to adjust any necessary settings, but I am unable to sign in to the account that I previoulsy used to set up the ePrint account. When I try from the HP Smart app, I get:
"We're sorry, something went wrong - We apologize for the inconvenience! Please exit setup and try again later to resolve this issue. If you continue to have issues setting up, contact HP Support. (Error Code: UA_400_EB000U0100)" and the only option is to Exit Setup.
This was working for years until recently. I tried logging into the printer directly and when I go to the web services page, it says "An error has occurred, unable to communicate with the web services server" I have tried to print the "info page" from the web services setting page, but it never prints, so I am unable to retrieve the "claim code" needed to try to re-register the printer with the HP Smart site. Though the printer web service page does still show that ePrint and Print Apps are still "on".
It seems that the issue is with HP cloud services and not on the end users side. HP, do you have any resolutions to this or is it time to say goodbye and look into alternatives?
Solved! Go to Solution.
Accepted Solutions
05-06-2022 04:17 PM
Let's try and uninstall the printer software from the root level on your PC and install the full feature printer software.
First, unplug the USB cable from the printer if present.
- Go to Control panel – Programs and feature – Select all the HP printer entries and uninstall them.
- Now go to Control panel – Devices and printer – Select all the printer entries and remove the device.
- Restart your computer.
- Click the bottom-left Start button on desktop, type device manager in the search box and tap Device Manager on the menu.
- Once in device manager, click on the view tab in the top & choose “Show hidden devices”.
- Then from the device manager list, check the entries under “Printer” – If there are any entries, please right click and choose “uninstall” – In the confirm device un-install pop-up, make sure you select the box which says “Delete the driver software for this device".
- Also, check the entries under "printer queue" and "imaging devices" and repeat the same exercise. Delete any printer entry or any entry which says “Unknown device”.
- Once done, close device-manger. Then press the "windows key" + "r" to get the "Run" window open - Type "printui.exe /s" and press enter.
- Under print server properties, go to drivers - remove any entry there as well.
- Again, go running window, type – “c:/programdata” – Go to Hewlett Packard folder, remove any printer related folders & files.
- Once done you can try cleaning out your temporary files and cached files. You can try using automated applications like some cleaner software's that you can download from the internet.
- Now restart your computer again.
- Open the Run window again, type “services.msc” and press ok to get services window.
- Scroll down to “Remote Procedure Call (RPC)” – right-click and go to properties. Make sure the service is started and startup type is “Automatic”.
- Now scroll up and go to “Function Discovery Provider Host” – right-click and select properties – Change the startup type to “manual” and start the service.
- Repeat the same exercise on “Function Discovery Resource Publication” as well
- Windows image acquisition stop and restart the service
Install all the available Windows updates
If it is been a while since you updated your Windows, that is the main reason why Windows says your HP printer driver is unavailable. Here are the steps how to do a Windows Update to install all accessible operating system update.
If you are accessing Windows 10, then these steps are for you.
- Hit the Start menu and write an update. After that, click on the “Check for updates” option.
- Tap on the “Check for updates” option.
- After clicking on that option, Windows will install the updates automatically.
- When Windows completes all its updates, start your computer again and attempt to print a file to check if your printer works.
Reinstall the drivers from the Software and drivers page
If the error persists, Try installing the printer with windows built-in driver
I have sent you a private message requesting information regards to the Mimecast issue
Hope this helps! Keep me posted.
05-03-2022 12:59 PM
Hi @DG110,
Welcome to the HP Support Community
I'd like to help!
I understand you are unable to sign in to the HP Smart app and cannot connect to web services.
The HP Smart app login issue is been investigated by the team.
As a temporary workaround, use HP Easy Start to set up the printer on your computer so you can print and scan files.
- In Windows, go to 123.hp.com/setup, and then click Install HP Easy Start.
- Open HP Easy Start, follow the prompts, and then select Full Software and Drivers as the software solution.
- Once the setup completes, the printer is ready to use.
Also, try the steps in the document to connect to web services-Cannot connect to Web Services
Hope this helps! Keep me posted.
Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.
Click the “Yes" on the bottom right to say “Thanks” for helping
05-06-2022 08:04 AM
I already have the printer working on another computer, but the workaound you propose does not work for the one in question, as for some reason it has never been able to print directly to this device since upgrading to windows 10. The only workaround that worked was eprint, which is now stopped working because we cannot log into the smart app and approve the mimecast spam email.
05-06-2022 04:17 PM
Let's try and uninstall the printer software from the root level on your PC and install the full feature printer software.
First, unplug the USB cable from the printer if present.
- Go to Control panel – Programs and feature – Select all the HP printer entries and uninstall them.
- Now go to Control panel – Devices and printer – Select all the printer entries and remove the device.
- Restart your computer.
- Click the bottom-left Start button on desktop, type device manager in the search box and tap Device Manager on the menu.
- Once in device manager, click on the view tab in the top & choose “Show hidden devices”.
- Then from the device manager list, check the entries under “Printer” – If there are any entries, please right click and choose “uninstall” – In the confirm device un-install pop-up, make sure you select the box which says “Delete the driver software for this device".
- Also, check the entries under "printer queue" and "imaging devices" and repeat the same exercise. Delete any printer entry or any entry which says “Unknown device”.
- Once done, close device-manger. Then press the "windows key" + "r" to get the "Run" window open - Type "printui.exe /s" and press enter.
- Under print server properties, go to drivers - remove any entry there as well.
- Again, go running window, type – “c:/programdata” – Go to Hewlett Packard folder, remove any printer related folders & files.
- Once done you can try cleaning out your temporary files and cached files. You can try using automated applications like some cleaner software's that you can download from the internet.
- Now restart your computer again.
- Open the Run window again, type “services.msc” and press ok to get services window.
- Scroll down to “Remote Procedure Call (RPC)” – right-click and go to properties. Make sure the service is started and startup type is “Automatic”.
- Now scroll up and go to “Function Discovery Provider Host” – right-click and select properties – Change the startup type to “manual” and start the service.
- Repeat the same exercise on “Function Discovery Resource Publication” as well
- Windows image acquisition stop and restart the service
Install all the available Windows updates
If it is been a while since you updated your Windows, that is the main reason why Windows says your HP printer driver is unavailable. Here are the steps how to do a Windows Update to install all accessible operating system update.
If you are accessing Windows 10, then these steps are for you.
- Hit the Start menu and write an update. After that, click on the “Check for updates” option.
- Tap on the “Check for updates” option.
- After clicking on that option, Windows will install the updates automatically.
- When Windows completes all its updates, start your computer again and attempt to print a file to check if your printer works.
Reinstall the drivers from the Software and drivers page
If the error persists, Try installing the printer with windows built-in driver
I have sent you a private message requesting information regards to the Mimecast issue
Hope this helps! Keep me posted.