When scanning getting a failure to open session on a device

When attempting to scan from my HP photosmart 7520 I'm getting a FAILURE TO OPEN A DEVICE message

Care to share which OS you are using?
In the meantime, read the user manual that came w/the scanner and/or contact HP Support.

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When I get mail, no pictures open

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Thanks. I do know about that and that's what I do 90% of the time.
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Getting error code -251723766 returned from the "EthernetIP Open Session.vi" while trying to talk to a PLC

I have created a LabVIEW application using LabVIEW 2012 (64 bit) that attempts to communicate with a PLC. I do not actually have the PLC here at the Rockwell Collins facility in Cedar Rapids, Iowa.
I have sent this application to my co-worker, who is located at a different Rockwell Collins facility in Tustin, California, where the PLC is actually located.
My coworker in California is reporting that when he starts up my application under WIN7 he gets an error code of "-251723766" when the S/W performs the "Open Session" function during initialization.
I looked at the online help and the value "-251723766" is not defined.
When I run the same application under WIN7 here in Cedar Rapids I do NOT get the runtime error code of "-251723766" during initialization.
Do you have any ideas for what is causing this problem?

Hello
I never really understood what the session parameter was all about.
The documentation says that the session parameter is optional.
Based on your advice I have deleted the code from my block diagram that was doing an Open Session.
Are there any example LabVIEW programs that I can study that actully use the Ethernet/IP S/W to connect to a PLC?
I have attached 2 screen captures that show how my LabVIEW VI's are accepting the session parameter.
Do you think I should delete the input and output parameters for session?
Please let me know.
Thank you
Todd J. Miller
319-295-8689
Attachments:
OpenSessionProblem#4.jpg ‏107 KB
OpenSessionProblem#5.jpg ‏189 KB

What should I do when I get failure to instal error message?

what should I do when I get a failure to install error message?

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VISACOM - Alloc Error using 488.2 USB-B Interface - too many open sessions

I have been having the following issue in my VB .NET RF-ATE application.... It usually happens when my program enters a measurement loop (I.E. searching for P1dB). It begins to solve for P1dB and performs about 15 cycles (sets power level on SigGen and takes SpecAn meas) and then crashes due to the following error :
As Logged in the Event Viewer :
VISA: May 13 09:45:22: Error=bfff003c,"VI_ERROR_ALLOC: Insufficient system resources/memory": ViTable::add - too many open sessions
As Logged in VB .NET :
An unhandled exception of type 'System.Runtime.InteropServices.COMException' occurred in RFATE.exe
Additional information: HRESULT = 8004003c
VI_ERROR_ALLOC
Not sure why its happening my code is pretty solid (or so I thought) and I believe it closes the VISA session properly after each R/W operation? (See attached). I call the same procedure to talk to the GPIB instruments over and over.
Is it possible that I am not freeing and disposing of resources properly? I have read a little about destructors in .NET etc. but I was under the impression that as soon as "Sub End" is executed that the resources were free'd up? But that doesn't explain why I would get a "too many open sessions" error occour if I am closing the session after I am finished?
Another odd thing to note is that I have created testplan scripts and loaded them into my application with literally hundreds of measurement commands and my program didn't crash then???
I am very new to VB and .NET (3 months) so I have a lot to learn but I can't understand why this is occouring. Any help is appreciated.
Attachments:
GPIB.txt ‏3 KB

Just posting a followup... Turns out I found a way to make it work! (I have been fighting this for almost 3 days!).
If you look at the variable declarations of my procedure.....
Sub GPIB(ByVal Addr As Object, ByRef Data As Object, ByVal IO As String)
Dim ioMgr As Ivi.Visa.Interop.ResourceManager
Dim instrument As Ivi.Visa.Interop.FormattedIO488
Dim session As Ivi.Visa.Interop.IMessage
I use the "IMessage" interface for the variable session.
Just before the "Sub End" is executed I use the following line to close the session :
session.Close
Which it would appear doesn't close the session properly when you use the "IMessage" interface.
So I changed the line to use the "IVisaSession" interface instead :
Dim session As Ivi.Visa.Interop.IVisaSession
Now when the Close method is executed aparently it closes the session properly because my program isn't crashing at all!
I was using VISA COM 3.0 Reference object (GlobMgr.dll).
If anyone has any insight on this please do share.

Microsoft Access Open Session Prompt

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Hi
It might be possible that some of the dll files have got corrupted. You can search if you have duplicate dll files of Crystal reports on the machine.
Try repairing the software from Add/Remove programs. After installation restart the application.
If that doesn't help go for a uninstall of the software and reinstall.
Regards
Sourashree

How do I get Lion to automatically open downloaded files?

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I don't know where they go and often I don't know what the file was named
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I can't scan with my HP Photosmart Plus B210a, I get a "Failed to open a session on the device" message everytime I attempt to scan to the computer. I'm using the most current driver off the HP website for Mac OSX Lion 10.7

I can't scan to my computer with my HP Photosmart Plus B2010a, I get a "Failed to open a session on the device" message everytime. I'm using the most current driver for OS X Lion 10.7 off the HP website.

I get the same "Failed to open a session on the device" message with Apple Image Capture as I do with the HP Utility software.

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Failed to Open a Session on the Device - scanning from Mac OSX 10.9.3 - M1217nfw

Hello,
I'm running into some issues scanning wirelessly from our HP LaserJet M1217nfw MFP from any Mac running 10.9.3. I've tried to "Reset Printing System" and re-adding the printer with no success. Each time I open either Preview/Printers & Scanners/Image Capture, I receive the following error message: "Failed to Open a Session on the Device." When I add the printer, I do so by selecting the "+" icon, and selecting "Add Printer or Scanner..." selecting the printer from the list listed via bonjour, and "Select the software" but my model printer is not listed. The closest printer listed is HP LaserJet Professional M1210nf MPF Series, but it doesn't work. Any ideas here?
This question was solved.
View Solution.

Welcome to the HP Forums jpuebla,
I see by your post that you are having issues scanning, you aren't able find the drivers to add the printer.
I can help you with this issue.
The drivers for Maverick are the Apple Update drivers.
OS X v10.9 Mavericks: Installing and Using the Printer on a Mac.
Repair the Disk Permissions on the Mac:
Close all applications.
On the Apple menu bar, click Go, click Applications and then click Utilities.
Double-click Disk Utility.
Highlight your hard drive/partition on the left.
Click Verify and then Repair Disk Permissions.
Restart the computer.
Reset the Printing System:
Note: This will remove all printers in the print and Fax/Scan, any printer removed can be re-added later by clicking the plus (+) symbol.
Click the Apple icon ( ), and then click System Preferences.
Click Printers & Scanners.
Right-click (or Ctrl +click) in the left white side panel, then click Reset printing system.
Click OK to confirm the reset.
Type the correct Name and Password.
Click OK to reset the printing system.
Then click the + sign, then select the printer from the list and click on the Add button.
(make sure it shows the printer name beside Use, not the Airprint driver)
You might have to run the Apple Updates again with USB cable connected to get the drivers installed.
Then try and add the bonjour printer again.
Test the printer again.
If you are having network issues, then add the printer through the IPProtocal.
After clicking the + button, select the IP icon across the top, type in the printer's IP address, select jet direct below and then Apply.
Test the printer.
I have seen the HP Printer Drivers v.2.16.1 for OS X drivers work successfully, if the issue persists.
If you need further assistance, let me know.
Have a nice day!
Thank You.
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos Thumbs Up" on the right to say “Thanks” for helping!
Gemini02
I work on behalf of HP

Re: get list of open session

Hello, if i get sessions like
public ActionForward execute(ActionMapping mapping, ActionForm form,
        HttpServletRequest request, HttpServletResponse response)
            throws ServletException {
            request.getSession().removeAttribute("web_user");
}is there is a way to find, list of open sessions, or list of ppl who loged into the system?

A session is associated to a user. Removing an attribute from a session will have no impact on other sessions. You will have to store the currently active users in a higher scope (one thats common to all users - ServletContext is a good choice).
You will also have to use a combination of listeners to achieve this.
Assume you have a user object bound to each session (that stores the logged in user info).
some login process inside, say a Servlet
User userObj = new User();
//userObj.setXXX() setter methods that store user data in this object
request.getSession.setAttribute("web_user", userObj);Step 1.
Create a list to hold all active users in your context object. This list is instantiated when the context fires.
public class CtxListener implements ServletContextListener{
     public void contextInitialized(ServletContextEvent ctxEvent){
          ctxEvent.getServletContext().setAttribute("currentUsers", new ArrayList());
     public void contextDestroyed(ServletContextEvent sce){}
}Step 2
Use a HttpSessionBindingListener that informs you when a UserObject is bound to a session.
public class User implements HttpSessionBindingListener {
     //variables and get/set methods go here
     public void valueBound(HttpSessionBindingEvent event){
          //get a handle to the context page
          ServletContext ctx = event.getSession().getServletContext();
          //get a handle to the user's list ctxt attribute
          List userList = (List)ctx.getAttribute("currentUsers");
          //add this object to the user list
          userList.add(this);
     public void valueUnbound(HttpSessionBindingEvent event){
             //do nothing
            //we will remove logged out users in a different manner
}Step 3
Now at any point where you have access to the ServletContext(which is virtually everywhere in a web application), you can get the list of users in the following fashion.
//some servlet
     List currentUsers = (List)getServletContext.getAttribute("currentUsers")
}Step 4
We have to remove logged out users. Do it using a SessionListener
public class SessionListener implements HttpSessionListener{
     public void sessionCreated(HttpSessionEvent se){
     public void sessionDestroyed(HttpSessionEvent se){
          HttpSession session = event.getSession();
          ServletContext ctx = session.getServletContext();
          List currentUsers = (List)ctx.getAttribute("currentUsers");
          currentUsers.remove(session.getAttribute("web_user"));
}You should ofcourse register your listeners in web.xml
Cheers,
Ram.

I get "conversion failure" message when attempting to upload to combine. Help.

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To properly close Firefox on your Mac use "Firefox" button -> Quit Firefox, and not with the "X" in corner of window which simply closes the window and not necessarily Firefox.
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I am trying to open PDF files from safari, but when I click on them they open in a separate window and the information is encrypted. Any ideas on how to get them to open them in Adobe? Any help please!

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The pdf is loading as html code. If you save it, it will download as :
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When scanning getting a failure to open session on a device

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