Office error – Something went wrong
1] Restart your device
It is possible that apps might be getting stuck because of the background process. That process could be blocking the app launch. So at least wait for a few minutes, restart your device and then relaunch the app. You can also try to sign-in back with the Microsoft account connected to your Office.
If you are not sure which account you were using, follow the steps to figure it out.
2] Repair Office from Apps and Features
Windows 10 offers repair features which replace some of the core files with original files. When you choose to repair, you might get two options. It depends on how the Microsoft Office was installed, i.e., Web Installer or Offline installer (MSI based).
Web Installer: When prompted how would you like to repair Office, select Online Repair > Repair. Do not use quick repair option here.MSI-based: In “Change your installation”, select Repair and then click Continue.
The repair process makes sure that the app data remains untouched.
3] Try Reinstalling Office
If both the steps don’t work, it is best to reinstall Office. Make sure to use the Microsoft Office Uninstall Tool to uninstall Office completely, and then reinstall it. If during reinstallation, Office is taking a long to install, you can choose to download the offline installer, and then complete the installation process. Make sure to select the correct version during office installation. Let us know if it helped you to fix the issue for “Something went wrong” error when you try to start an Office app.