Error 104101 in Zoom – how to fix ?

Published: June 21, 2022

Last Modified: March 15, 2023

Error 104101 in Zoom-How to fix

In the situation that has been developing recently, many users are trying to find an opportunity to communicate remotely through available programs on the Internet. One of these is Zoom. This platform has a very accessible interface that allows you to easily organize a video conference. However, failures and errors occur in this service as well. Sometimes there are difficulties connecting to the program server when you see the error code 104101. As a result, it is not possible to get in touch on time, which subsequently leads to a change in the schedule of the working day.

Too many conference participants prevent the program from connecting to the server. However, there are many other reasons for this failure. Below are ways to fix it.

Reasons for the error

When connecting to a video conference, an error with the code can occur for the following reasons:

  • The program has been run more than once. If the system is loaded with several background processes of the same application, then this not only leads to a conflict, but also reduces the quality of the Internet connection, which is further exacerbated by the use of other applications running over the network. Because of this, Zoom is very slow and throws an error.
  • Weak internet connection speed The Zoom application requires a lot of bandwidth, and if the Internet is unstable, then the program drops the connection and causes a crash message to appear.
  • Corruption of cookies in the browser cache. It is there that all the data about the pages that have been viewed before is collected, so that when you re-access them, they will load faster. But if this information is corrupted, you can expect a variety of errors to appear.
  • The program files are blocked by the Windows firewall or the installed antivirus, which considers them unsafe for the system. In this case, you will need to disable real-time system protection or add Zoom to programs that work as an exception, and then try to connect again.

Before you can apply the following solutions, you need to complete a number of these steps. First, reboot the router, if used, and the PC itself. This will help free up RAM and remove erroneous temporary configurations, and the system will start virtually from scratch. When rebooting network equipment, remember that you will need to wait 10–15 seconds before turning it back on.

Re-enter Zoom after closing it. In order to be sure that the application is completely closed, you need to end all background processes associated with it through the Task Manager. When using the web version, close all browser windows. After the re-entry is completed, you can try to connect to the conference.

Check if the current version of the app is up to date. If it requires an update, then you need to do it. The browser should clear the cache and cookies. You will also need to double-check

system for the presence of programs that cause harm. These are the ones that often cause these problems.

Changing Windows Firewall Settings

When the Zoom application connects to the server, the connection may be blocked by the firewall, as the firewall may perceive the operation of the application as malicious. If this happens, you need to add Zoom to the list of allowed programs for the firewall. This is done like this:

    1. We then proceed to the Firewall section.
    3. In the panel located on the left side of the screen, select the option to allow programs or components to run through the firewall;
    4. To gain access to editing, click on “Change settings”. In the list of programs we find Zoom and tick off the option to access the private and public network. This action will allow the application to run with firewall permission.


      firewall window

    5. After that, we return one step higher and go to the “Advanced options.”
  1. Select the “Rules for incoming connections” section and find the “Zoom” option. We go to “Properties” in the side menu located on the right.
  1. At the end, we find the “General” tab, located in the “Actions” section, and allow the connection, confirming all actions with the “Apply” button. These steps should also be applied to other settings that are associated with Zoom.

Error 104101 should no longer appear.

Disable antivirus software on your computer.

However, if everything happens again, then this means that the external service may be blocked by the antivirus. In this case, you should disable it until the cause of the error is determined. If Windows Defender is used, then you need to do the following: in the search bar, type in “Windows Security” and go to the result. Next, follow the section “Protection against viruses and threats” and then to “Manage settings”.

This is where real-time protection is disabled; otherwise, Windows Defender will continue to prevent communication with the external server. Error 104101 can be eliminated in this way as well..

Flushing the DNS Cache

But if, as a result of this action, the failure continues to appear, then you need to try clearing the DNS cache. This will cause the PC’s network configuration to be reset and corrupted entries to be deleted. To do this, we perform the following steps:

  1. We go into the task manager by holding down Ctrl, Shift and Esc at the same time and selecting the “File” menu in it. Next, click on “New Task” and enter the cmd command, remembering that you need to log in as an administrator, and using the Enter key, open the command line;
  1. To flush the DNS, enter the ipconfig/flushdns command;
  1. After the process is complete, you will need to reset the network configuration using the netsh winsock reset command. Now the command line can be closed.
  1. We go to the Control Panel. For convenience, you can select large icons. This option is available in the upper right corner of the screen. Then go to the Network and Sharing Center and on the left panel, select the “Change adapter settings” tab;
  1. Using the context menu on the icon of an active network connection, select its properties. Next, we need the TCP/IPv4 parameter, in which, again, we go to “Properties”;
  1. Select the option “Use the following DNS server addresses” and add the new addresses and
  1. Confirm the action by clicking on the “OK” button and rebooting the system

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