ubiorbitapi_r2_loader.dll is a dynamic link library file that is related to the Uplay PC client by Ubisoft. It is used for launching and managing games distributed by Ubisoft.
If you encounter an error related to ubiorbitapi_r2_loader.dll, it may indicate a problem with the Uplay PC client or the game itself. Here are some possible solutions you can try:
1. Reinstall Uplay: Sometimes, the error may be caused by a corrupt installation of Uplay. Uninstall Uplay, restart your computer, and then download and install the latest version from the official Ubisoft website.
2. Verify game files: If the error is specific to a certain game, try verifying the game files through Uplay. Go to your game library, click on the game in question, and then click on "Verify files" under the "Properties" tab.
3. Update drivers: Make sure your graphics card drivers and other important drivers are up to date. Visit the manufacturer's website to download and install the latest drivers.
4. Run as administrator: Right-click on the Uplay shortcut and select "Run as administrator". This may help if the error is related to file permissions.
5. Contact Ubisoft support: If none of the above solutions work, contact Ubisoft support for further assistance.