The "Activation64.dll" file is a dynamic link library file used by Electronic Arts' digital rights management (DRM) software called EA DRM Helper. It is used to activate and validate the ownership of games purchased from the EA store. If you encounter an error related to "Activation64.dll", it could be due to various reasons, such as a corrupted or missing file, a compatibility issue, or a problem with the EA DRM activation server.
To troubleshoot the issue, you can try the following steps:
1. Restart your computer and try again.
2. Reinstall the game or application that is giving you the error.
3. Make sure that your computer meets the minimum system requirements for the game or application.
4. Check for updates to the game or application and install them if available.
5. Update your graphics card driver and other system drivers.
6. Disable any third-party antivirus or firewall software temporarily and try again.
7. Contact EA support for further assistance if the issue persists.