Using an Office activator can potentially affect the functionality of Microsoft Office in several ways. While it may initially grant access to all features, the software may become unstable or fail to update properly over time. This can lead to issues such as application crashes, loss of data, or decreased performance. Additionally, because activators often interfere with the normal operation of Office, you may encounter problems with file compatibility or integration with other software. For optimal performance and reliability, it’s best to use a genuine copy of Microsoft Office.