How to Fix 0xC004C770 MAS Activation Error
The activation error code 0xC004C770 typically indicates that the activation server reported that the product key has exceeded its activation limit. When using Microsoft Activation Scripts (MAS), this error can sometimes appear due to various reasons, including server communication issues or conflicts with existing activation data.
Understanding 0xC004C770 in MAS
When you use MAS methods like HWID (Hardware ID), Ohook, TSforge, or Online KMS, the script attempts to activate your Windows or Office installation. The 0xC004C770 error suggests that the activation process, particularly if it involves online verification or a key-based method, is being rejected. This isn't usually a flaw in MAS itself but rather an upstream issue with the activation server's response to the request. Sometimes, a simple retry or ensuring your system is clean of previous activation attempts can resolve this.
Troubleshooting Steps and MAS Download
To effectively fix 0xC004C770 MAS error, first ensure you're using the latest version of MAS. You can download the script directly as a .cmd or .zip file from the official source. There is NO password required for the archives. If your antivirus flags the download or script, temporarily disable it; this is a common false positive due to the nature of activation tools. After downloading, run the script with administrator privileges. If the error persists, try running the script again after a reboot, or consider trying a different MAS activation method (e.g., if you used Online KMS, try HWID).
To get started, simply run the PowerShell one-liner: irm https://get.activated.win | iex
For the most reliable activation and to fix 0xC004C770 MAS error, always download the latest version of Microsoft Activation Scripts from our official page. /