POS Client will not connect to server

Sometimes you get that one POS client that will not connect to the server for whatever reason.  Here are some things to try to resolve this situation so it doesn’t happen again.  Below are the steps to take to resolve this.  If it is still an issue, contact QB Services, LLC and will will help you resolve this problem.

Change firewall to allow POS components through: Attached are all the settings that need to be changed in your firewall configuration on both machines for the client POS to communicate to the server POS.  Once you have added these programs/ports to your firewall, you should be able to connect your client POS to your server POS.

Next steps if this doesn’t work:
1. On the server workstation (WS-1) click on Run and type, “cmd” or get to the DOS command prompt.
2. Type in “ipconfig” and write down the ip address of the server workstation.
3. On the client machine, click on “Run” and type in, “Drivers”.
4. Open Folder named, “etc”
5. Open file named “hosts” by double-clicking it.  If the last line has the same exact IP address as your server, then go to the next step.  Otherwise, skip the remaining steps here and go to the next section, “recreating data file(don’t worry)”.  The file should look something like this:


# Copyright (c) 1993-2006 Microsoft Corp.
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a ‘#’ symbol.
# For example:
#     rhino.acme.com          # source server
#     x.acme.com              # x client host       localhost
::1             localhost   ?Change this to the IP address of the server.


6.   Close “hosts” data file and copy to desktop.
7.   Re-open the copied “hosts” data file that you just copied (the one on the desktop).
8.   Type in on the last line the IP address of your server workstation, hit “tab” and type the server workstation name.  (i.e.
9.   Save the file and copy it back to the location of the original file.
10. Click, “Yes” when prompted to write over the old file.

Try your connection again.  If you still cannot connect then….
Recreating Data File(don’t worry)
Looks like you have had quite a bit of troubles.  This should work when all the above steps have failed.
1.   Create Backup file of your data.
2.   Create a new POS file.
3.   With the new file open, in the file menu, click on “Open”
4.   In the alternate location, browse to the data file found in:
C:UsersPublicDocumentsIntuitQuickBooks Point of Sale 9.0Data<name of company file>
5.   Select the “qbpos.db” file.
6.   Click on “OK”
The file will then be recreated with all the data you had in step 1.  Try opening your client machine again and see if you connect.  If so, then you are on your way.  If not, then give QB Services, LLC a call:  (952) 232-6388

Leave a Reply