When installing HubSpot Sales for Outlook, you may encounter a "Process cannot access file because it is being used by another process" error message.
To resolve this:
- Press Ctrl+Alt+Delete.
- Click Start Task Manager.
- In the Task Manager, click the Processes tab.
- Find and click on the Sidekick Tray WPF process, then click End Process. If a warning window opens to ask if you want to end the process, click End Process again to confirm.
- In the Start menu, find Sidekick for Windows or HubSpot Sales for Windows and open it.