If you attempt to watch a movie on Netflix, Hulu, or Amazon Prime Video in Google Chrome, the streaming service might suddenly block the video playback and display a cryptic error code (most commonly M7701-1003). This error means that Chrome’s internal Digital Rights Management (DRM) module—known as the Widevine Content Decryption Module—is either missing, outdated, or catastrophically corrupted.
Widevine is a modular plugin that runs silently in the background of Chrome. It decrypts the secure video streams sent by Netflix so you can watch them without being able to illegally download the raw video file. If the module breaks, the video stream simply refuses to load. You must manually force Chrome to reinstall a fresh copy of the DRM decoder.
How to Completely Reinstall the Chrome Widevine CDM
You must use Chrome’s hidden components page to trigger a forced update.
- Open the Google Chrome browser.
- Click on the address bar at the top of the window, type the following exact URL, and press Enter:
chrome://components - You will be taken to a bare-bones diagnostic page showing every internal module Chrome relies on.
- Scroll down the list until you find the entry labeled Widevine Content Decryption Module.
- Beneath the title, you will see a version number. (If the version number says
0.0.0.0, it means the module is completely missing or corrupted). - Click the Check for update button located directly underneath the version number.
- Chrome will immediately ping Google’s update servers and download a fresh, working copy of the DRM module. The status text will briefly say “Downloading” before changing to “Up-to-date.”
Crucial Final Step: Widevine is a low-level DRM service that locks itself into memory. For the reinstallation to actually take effect, you must completely close all Google Chrome windows and reopen the browser. Navigate back to Netflix, and your video stream will now decrypt and play perfectly.