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QuickBooks POS Client Cannot Connect To Server : Complete Guide

QuickBooks POS is an application provided by QuickBooks and it is also considered as the most important part of QuickBooks. Usually, the POS application runs smoothly but sometimes it crashes due to critical errors. These errors can restrict you to do transactions and increases work time. Today, we will guide you on how to cope up with the situation “QuickBooks POS Client Cannot Connect To Server”. You can try on your own by following the steps which we will discuss further. If you find it hard to solve then you can take the assistance from our Intuit QuickBooks Support Team available at QuickBooks Customer Support Phone Number +1888-382-9112.

You are facing this error due to the absence of a multi-user environment. The Error message which you will see on your screen is:

Error: Elaborate the Company Data File & the Server


  • Multi-user mode is not set on the server
  • The Network is restricted by Windows Firewall or other third party application
  • Poor Internet Connection
  • The Wrong IP is in use
  • Improper Configuration for folder permission

Important Things To Remember

  • Check for the system requirements
  • Restart your server and system
  • Make sure all the connections are working fine
  • Log in as an Administrator

Easy Steps To Fix This Issue

You can use 3 methods to cope up with the situation “QuickBooks POS Client Cannot Connect to Server Error”. Steps are mentioned below:

Note: If your issue is solved after Method 1 then don’t proceed to the next Methods.

Method 1: Set Your Server To Multi-User Mode

  • Run QuickBooks POS application and hit File menu
  • Search for Switch Company File to Multi-User Mode in the list
  • Reboot your QuickBooks POS application and check that the issue is resolved or not

Method 2: Turn On Network Discover Option

  • Go to Control Panel
  • Click on Network & Sharing Center option
  • Select Change advanced sharing settings
  • Maximize the window of Network Profile
  • Choose Turn on from the Network Discovery
  • Turn off the protected sharing option
  • Now, Restart your system

Method 3: Change The Names Of WSActivity Files

  • Navigate to the area where WSActivity file is located
  • Change the name of it to OLDWSActivity
  • Shut down your POS application
  • Try to run QuickBooks POS now

Connect With US For Instant Help Experts hope that everyone who is facing this issue is now able to fix on their own after reading this complete guide. However, if you are facing the same issue after implementing the above steps then give us a call at QuickBooks Tech Support Phone Number +1888-382-9112.

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QuickBooks Error H202: Resolve Multi-User Errors

QuickBooks comes with a powerful interface that helps you to perform complex accounting tasks with ease. Its multi-user mode allows multiple users to work on a QuickBooks company file. However, there can be some situations when you may fall into several errors and issues that can restrict you from working on your accounts. QuickBooks Error H202 is one such error that occurs when you try to open your QuickBooks company file in multi-user mode or when you switch your company file to multi-user mode.

When you try to open or switch company file hosted on Fedora Linux or Citrix server, you are shown the following error message:

Problem with multi-user hosting setup. QuickBooks could not open the file in multi-user mode. (H202)

If you are also getting the error code H202 while opening your QuickBooks company file and you are looking for solutions, then this article can be very helpful for you as we will be providing you the steps to resolve this error. In case, if you require any kind of assistance from our technical support department then you can contact us at our toll-free QuickBooks Enterprise Support Phone Number +1888-382-9112.

Causes Of QuickBooks Error H202

Main causes due to which the error code H202 in your QuickBooks are as given below:

  • QuickBooks company file is damaged
  • Damaged location of your company file.
  • QuickBooks company file is not available in the server system.
  • Installation of QuickBooks is damaged.
  • If the Fedora Linux server hosting the file is assigned as its Fully Qualified Domain Name (FQDN). For example, [ComputerName].[DomainName].com
  • You are using a 64-bit version of Linux.

Resolving QuickBooks Error Code H202

QuickBooks Error Code H202 basically represents the multi-user issue and it usually occurs in a hosted environment. Keeping that thing in mind, we have provided the solutions according to the different servers. Steps to resolve error code H202 are as follow:

Fedora Linux

Important: The provided solution steps needs to be performed i. If you are not sure about performing the steps or you can any queries related to DNS settings, we recommend you take assistance from your IT professional.

Solution 1: Add the Server’s Fully Qualified Domain Name to the hosts file of each QuickBooks workstation

You need to perform the following steps on each workstation in which the QuickBooks is installed.

  • Navigate to the etc
    • Press Windows + R to open the Run command.
    • Type%SYSTEMROOT%\system32\drivers\etcin the search field and then click on OK or hit enter.
  • Double-tap on the Hosts
  • Select Notepad from the Programs drop-down.
  • In the next available line, provide the Linux server’s IP number.
  • Press the Tab key and then provide the Linux server’s Fully Qualified Domain Name.
  • Go to File > Save.
  • Go to File > Exit.

Solution 2: Edit the QBGlobalAppConfig.ini file on the Fedora Linux Server

  • Navigate to the Linux Terminal Window and then select QBGlobalAppConfig.ini.
  • Locate the default port range and remove all the spaces before and after the (=) equal sign.
QuickBooks version …from to…
QuickBooks Desktop Enterprise 19.0 55383 = 5 55383=5
QuickBooks Desktop Enterprise 18.0 55378 = 5 55378=5
QuickBooks Desktop Enterprise 17.0 55373 = 5 55373=5
QuickBooks Desktop Enterprise 16.0 55368 = 5 55368=5
  • Save the QBGlobalAppConfig.ini file.
  • Close and run the QBDBFILEMON and QBDBMGRN services again.

Solution 3: Create a mapped drive

You have to create a mapped drive to the Linux server’s IP address.


The error code H202 can pop-up on your screen if the Citrix server tries to run QuickBooks using client-side application virtualization.

Solution: Run QuickBooks using server-side application virtualization

Setting up QuickBooks in Citrix server is a bit complex task that’s why Intuit doesn’t provide support for all the server configuration issues. If you want any kind of assistance, then you can contact your IT professional.

Technical Support For QuickBooks Desktop

The provided solutions will allow you to resolve the QuickBooks Error H202 and you will be able to open and work on your QuickBooks company file. However, sometimes resolving errors in multi-user mode can be a bit complex thing for you and you may not be able to resolve the error. In such situations, you can contact us at our toll-free QuickBooks Support Phone Number +1888-382-9112 to get an instant solution for your errors and issues from experts.

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QuickBooks Error -6073, -99001: QuickBooks Is Unable To Open This Company File

QuickBooks Desktop has so many features that makes accounting ease. However, at the same time it have various error codes and issues as well that can hinder your work flow easily. There are multiple categories and error series such as QuickBooks 6000 error series, QuickBooks 15000 error series etc. QuickBooks Error -6073, -99001 is one such error which is a company file error. This error restricts you from opening the company file and it comes up with the following error message:

QuickBooks is unable to open this company file. It may have been opened by another user…

If you are also getting the QuickBooks Error Code 6073, 99001 while trying to open the company file then this article can be very helpful for you as we will be providing you the solution for this error. You can also contact us at our QuickBooks Customer Service Phone Number +1888-382-9112 to get an instant solution for your issues.

What Causes The Error Code 6073, 99001?

The error code 6073, 99001 can be caused due to the following reasons:

  • The company file you are trying to open is already opened on another system in Single-User mode.
  • The company file you are trying to open is located in a read-only network folder.
  • The company files are already hosted on a Linux server and multiple users are signed in to the shared folder.
  • The file you are opening is already being used on a remote software but the hosting system sees that the user is still logged in.
  • Damaged QuickBooks company file.

How To Resolve QuickBooks Error 6073, 99001?

Step 1: Use The QuickBooks File Doctor

Download and run the QuickBooks File Doctor tool to resolve basic QuickBooks data damages.

  • Run the tool and from the first window, choose your QuickBooks company file from the drop-down list. To locate your file, you can also click on Browse.
  • Decide what you want to scan:
    • If you see a specific Error 6000 (-6073, 99001, -6000 -82, -6000 -305, -6000 -301, -6147, or -6130), Click on Check your file and network and then click on Continue. The scan will start and it may take some time depending on your file size.
  • Click on Workstation if your system is connected to a network but your company files. If your are asked to share your company file, click on No.
  • Click on Server if your system is hosting your QuickBooks company file. You need to choose this option only if you use QuickBooks in single user mode. If you are asked to share your company file, click on Yes.

Once the scan finishes run QuickBooks and then your company file. If the issue is still around, go to the next solution.

Solution 2: Manually Resolve The Error -6073, -99001

If the company file is open in Single User mode in another workstation

  • Close QuickBooks in all the connected systems.
  • Open your QuickBooks company file on the Host
  • From the File menu of QuickBooks, click on Switch to Multi-user mode.
  • If the error is still occurring, restart all the connected workstations.

If the company file is open in Single User mode on the Host computer.

  • From the File menu of QuickBooks, click on Close Company.
  • Try to open the QuickBooks company file again by going into File > Open or Restore Company>Select Open a company file
  • Click on Next and then select your company file.
  • Click on Open file in multi-user mode and then Open.

If your company file is located in a read-only network folder

  • Open your hosting system and then go to the folder where your QuickBooks Company Files are stored.
  • Right-click on the folder and click on Properties from the drop-down list.
  • Navigate to the Security tab and choose the user that is having log in issues.
  • Click on Edit option and then mark the Allow to provide Full control.
  • Click on Apply, then OK.

If the computer is being accessed remotely via LogMeIn, GoToMyPC, etc.

  • Open the Task Manager by pressing CTRL + SHIFT + ESC
  • From the Processes tab,locate the processes related to the user in which the issue is occurring.
  • Now, restart your system.

Resolve QuickBooks Company File Errors

The provided steps should allow you to resolve the QuickBooks Error -6073, 99001 and then you should be able to open your QuickBooks company file. In case if you couldn’t resolve the error by the provided steps or you are having some issues while performing the solutions then you can contact us at our toll-free QuickBooks Support Phone Number +1888-382-9112 and get instant solution for all your QuickBooks errors and issues from our experts.

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