1. Add a Launch Parameter
Launch parameters are used to pass the values that the application accepts before loading any other configuration files. There are many launch parameters for Steam, and each parameter functions differently. Since this error is caused by the login UI update, we can try reverting the UI to the old version by using the launch parameter. The launch parameter we are going to use is -noreactlogin. It is accepted by Steam.exe and can be used to revert to the new login UI. This will disable the ReactJS login screen, which will return to the old login window. To use this command, you will have to add it to the target value at the end of Steam.exe. To do this, follow these steps:
2. Reset the Steam Password
You can also try resetting your Steam password to avoid this error. It may seem strange, but it has actually worked for most of the affected users. Consequently, we recommend that you reset your Steam password using the following instructions.
3. Clear Temporary Files
Every application you use creates temporary files for short-term purposes. These files are created and required by the applications to complete various tasks. However, they are not meant for long-term use, so we can safely delete them. If the Steam temporary files become corrupted, you will encounter login error E84. Therefore, try clearing the temporary files.
4. Clear Steam Cache files
Cache files contain the data that the application often requires and the user frequently accesses. The application creates cache files to decrease loading time because if the application requests data from the server, it takes time for the application to receive the requested data. Thus, the application stores the data in the cache files. So if there is corruption in the cache files, you will encounter the login error. Therefore, try clearing the cache files by following the steps. To clear the Steam cache files, follow the steps:
4. Set the time to adjust automatically
This solution is very important because if you have manually set the time, it might be wrong. Since several users have fixed this issue by setting the date and time automatically, we can say some users have an incorrect time set, causing this error. Thus, you need to set the time automatically. Follow the steps to do that:
5. Use VPN
The login error E84 is also caused by a problem with the network connection, which prevents Steam from contacting the login servers. If that’s the case, you can use a VPN (Virtual Private Network) to log in to your Steam account. Using a VPN will allow you to change your location and IP address, which will alter the route to the Steam server and potentially fix this error. There are many VPNs available; you can download one of the best with the assistance of our article.
6. Use Your hotspot
You can also use a hotspot to log in to your Steam account, but make sure to use different network connections such as mobile data or any other Wi-Fi connection. This will help if there is a problem with your network connection that prevents Steam from authenticating you. There are two ways to use a hotspot on a PC. The first way is to have a dongle or Wi-Fi adapter; simply turn on the hotspot and connect your PC to it. However, if you don’t have a Wi-Fi dongle or Wi-Fi adapter, you can use a data cable, also known as a USB cable, which comes with the mobile charger, to connect to the hotspot. For that, you need to connect the USB cable to the mobile device and PC. Then, you should go into the hotspot settings and turn on USB tethering. This will allow you to use your mobile internet on your PC. Once completed, you can log in to your Steam account to check whether the error is fixed or not.
7. Try Login using another device
If you are still encountering the login error E84 on your PC, you can try logging into your Steam account using other devices such as a mobile phone, laptop, or even the Steam website. If you can successfully log in, you can return to your PC and try logging into your Steam account. This is a strange workaround, but it has actually worked for several affected users. Therefore, we recommend that you try this before moving on to the remaining methods.
8. Delete the Steam Package folder
The Steam package folder stores information about games and user data. It is an essential folder for Steam, as it manages updates, installation, and user data. Hence, if the files within this folder become corrupted, you might encounter this error. Therefore, try deleting the Steam package folder, which will automatically be created when you run Steam.exe.
9. Reinstall Steam
If all else fails to fix this error, you can try reinstalling Steam, as this is the last solution that you can attempt from your end. If you have not created a library to save games downloaded from Steam, you should back up the games from the Steam Apps folder before reinstalling Steam. You can follow these steps to do so:
