Tbauth.dll: What Is It & How to Fix Missing and Corrupt Errors

Tbauth.dll is commonly associated with Thunderbolt Authentication protocols.

It handles a few email clients. Below, we’ll walk you through the details of what it does, how to fix related errors, and how to remove it. Let’s get started.

What i Tbauth.dll? Do you need it?

Tbauth.dll is a dynamic link library that is primarily associated with email clients like Microsoft Outlook and Thunderbird.

It handles authentication protocols, ensuring secure connections between the email client and mail servers (IMAP, SMTP, etc.).

If you use these email clients, you need it if you want to log in and sync your emails without errors.

Is Tbauth.dll safe?

Yes, Tbauth.dll is a legitimate and safe system file. It comes from trusted sources, typically installing when you install apps like Outlook or Thunderbird.

Howeve, it can be exploited by malicious actors that disguise malware as legit files. Here is how you can check.

1. Go to the file’s directory.
2. Right-click on the Tbauth.dll file and select Properties.
3. Go the Digital Signatures tab and make sure it says Microsoft Windows or Mozilla Foundation.
4. If it’s signed by something else, delete the file, it’s not legitimate.

You can also run a quick antivirus scan on the file using Windows Defender or a third-party antivirus.

How to fix Tbauth.dll errors

1. Open Windows Settings and select Apps> Installed apps.
2. Locate the app using Tbauth.dll and click on the ellipsis on its right.
3. Select Advanced options.
4. Select Repair and follow the on-screen prompts to finalize the process.

This will automatically scan for out-of-date, corrupt or missing files within the app and fix them.

Alternatively, you can also uninstall and reinstall the app displaying dll errors.

How to remove Tbauth.dll

1. Go to Settings, and select Apps> Installed Apps.
2. Locate the app using the Dll, and select Uninstall.
3. Wait for the process to complete.

To make sure the .dll is completely gone, you can also run an uninstaller software that’ll identify and remove and leftover files.

Tbauth.dll is an essential file for email clients, handling secure and seamless authentication. If you have problems with it, it’s easy to repair and reinstall.

That said, if you do not use these clients, you can safely remove it in just a few steps by removing related apps.