How to fix :sharex authentication error ?

Instructions for Fixing ShareX Authentication Error

ShareX is a popular open-source screen capture and file sharing tool that allows users to capture screenshots, record videos, and share files with ease. However, sometimes users may encounter an authentication error while using ShareX. This error can be frustrating, but it can be fixed with a few simple steps. In this article, we will provide you with detailed instructions on how to fix the ShareX authentication error.

What is ShareX Authentication Error?

ShareX authentication error occurs when the user tries to log in to their ShareX account, but the login fails due to incorrect login credentials or other issues. This error can also occur when the user tries to upload files to their ShareX account, but the upload fails due to authentication issues.

How to Fix ShareX Authentication Error?

Here are the steps to fix the ShareX authentication error:

Step 1: Check Your Login Credentials

The first step to fix the ShareX authentication error is to check your login credentials. Make sure that you are entering the correct username and password. If you have forgotten your password, you can reset it by clicking on the “Forgot Password” link on the login page.

Step 2: Check Your Internet Connection

The ShareX authentication error can also occur due to a poor internet connection. Make sure that you have a stable internet connection and try logging in again. If the error persists, try restarting your router or modem.

Step 3: Clear Your Browser Cache and Cookies

Clearing your browser cache and cookies can also help fix the ShareX authentication error. Here’s how to do it:

  1. Open your browser and click on the three dots in the top right corner.
  2. Select “Settings” from the drop-down menu.
  3. Scroll down and click on “Privacy and Security.”
  4. Click on “Clear browsing data.”
  5. Select “Cookies and other site data” and “Cached images and files.”
  6. Click on “Clear data.”
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Step 4: Disable Your Firewall and Antivirus

Your firewall and antivirus software can sometimes interfere with ShareX and cause authentication errors. Try disabling your firewall and antivirus temporarily and see if the error goes away. If it does, you may need to add ShareX to your firewall and antivirus exceptions list.

Step 5: Update ShareX

If none of the above steps work, try updating ShareX to the latest version. Sometimes, older versions of ShareX can cause authentication errors. To update ShareX, follow these steps:

  1. Open ShareX and click on the “Help” menu.
  2. Select “Check for updates.”
  3. If an update is available, click on “Download and install.”
  4. Follow the on-screen instructions to complete the update.


The ShareX authentication error can be frustrating, but it can be fixed with a few simple steps. By following the instructions provided in this article, you should be able to fix the error and continue using ShareX without any issues. If the error persists, you may need to contact ShareX support for further assistance.

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1.Share X: authentication Error when uploading image – Reddit

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2.Authentication Failure · Issue #6538 · ShareX/ShareX – GitHub

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7.ShareX Authentication Error: A Full Guide – Vingle

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