HP LaserJet Pro M1217nfw Multifunction Printer - No TWAIN Compliant is installed.

Question

I was trying to scan using the LaserJet Scan.  However, I have received a message "There is no TWAIN-compliant device installed.  Please install one and try again".  I have searched on google but I was unable to find one.  Please also note that I was also trying to uninstall the driver, but I was unable to do so because it stated that one or more of the printers listed above have pending print jobs.  Printers with pending jobs cannot be removed until the jobs are completed.
Thanks for taking the time to read and respond to my post.

Answer 1

Hi Hoang714,
Thanks for providing that information.
Download the and run the Print and Scan Doctor. It will diagnose the issue and might automatically resolve it.
Find and fix common printer problems using HP diagnostic tools for Windows?
Create a restore point on the computer. So this way we can always go back to that restore date.
Go to the start up screen, (tiles menu) type in restore point. Then follow the document provided.
How to Create a Restore Point in Windows 8.
Setting up the Administrator Rights on Windows 8.
Where Do I Change User Privileges in Windows 8?
Create a new profile. Create a user account . 
On the Windows 8, hold down the Windows Logo key () on the keyboard and the 'R' to open the run box.
Check the Windows Image Acquisition Services:
On the Windows 8, hold down the Windows Logo key () on the keyboard and the 'R' to open the run box.
Type in services.msc and click on OK.
In the Window, please right click on Windows Image Acquisition Service and then click on Properties.
In the Properties window, please click on Dependencies window and check the dependencies.
It should be “Remote Procedure Call” and “Shell Hardware Detection”. If you find anything else, please advise.
Close the Properties window.
In the main Services window, in the list make sure Windows Image Acquisition Service shows 'Started' in the Status column and 'Automatic' for the Startup Type. If the option to stop is available, click stop and then click start.
In the main Services window, in the list make sure that Remote Procedure Call (RPC) shows as 'Started' in the Status column and 'Automatic' for the Startup Type.
In the main Services window, in the list make Shell Hardware Detection services shows as 'Started' in the Status column and 'Automatic' for the Startup Type.
If the other two in the services are not started, please restart these services and then restart the Windows Image Acquisition service. Just right click and select start on each one.
Temporarilty turn off the Antivirus software, since it may stop the services.
When you run the installation, right click on it and Run as Administrator.
I have provided some more steps, just in case you still are having the Twain error.
file being in the wrong directory when the install gets done.
Hence the scanning works from MSPaint or Windows Scan and Fax programs but not from HPs Scan App.
The directions are quite simple and are as follows:
Hold down the Windows Logo key () on the keyboard and the 'R' to open the run box, type %temp%. You will see the  7z..... folder that extracted your web pack for the printer.
In this folder, navigate to drivers\scanner\x32\ folder.
Copy the HPWTIOP4.DLL from this folder.
Hold down the Windows Logo key () on the keyboard and the 'E' key. Then go  to Program Files (x86)\HP\DigitalImaging\Bin folder and past the HPWTIOP4.DLL in there.
Try scanning again.
Let me know how you make out.
Thank You.
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Gemini02
I work on behalf of HP