This guide will discuss all the available fixes for the problem right after examining the causes. Let’s begin!

What causes the Event ID 15 TPM error? 

Generally, the error appears if you have a problem with the TPM device. Some of the reasons for the error are: 

TPM fails to respond:  When Windows is trying to communicate or use the TPM device for functionalities that respond on TPM, including Bit Locker and Next Generation Credentials, and it fails to respond, it could cause the Event ID error. TPM performing self-test – When TPM resumes from sleep, it performs a self-test before processing any commands. During self-testing, if Windows tries to retrieve a random number, but the command fails, then Windows will receive this error. If the command fails three consecutive times, the OS logs the event. Hence we see the error.

How can I fix the Event ID 15 TPM module error on Windows 10? 

Before diving into serious troubleshooting, let us try these simple fixes first: 

Check for BIOS updates. Check whether TPM is on or off. Make sure Latest Servicing Stack Update (SSU) and monthly Cumulative Update (CU) in Windows are installed. Update your security processor (TPM). Enable TPM in BIOS.

If nothing from the above worked for you, it is time to move on to these troubleshooting steps: 

1. Uninstall and reinstall the TPM driver

1.1 Use Device Manager

1.2 Use a third-party tool

With driver updater utility like DriverFix, you can update drivers without hassles. It downloads the best compatible drivers for your device and installs them in a few clicks. Using automated tools has its advantages such as safely finding and updating outdated drivers and automatically installing new updates, saving time in all these processes. ⇒ Get DriverFix

2. Clear TPM

3. Disable Windows Credential Manager

4. Check if Core isolation is enabled

5. In-place upgrade

So, these steps can be used to resolve the Event ID 15 source TPM error. If we have missed out on any method that worked for you, please let us know in the comments section below.

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