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Search Income Tax (ONESOURCE) Help and Support.

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Check browser requirements for ONESOURCE Classic

You can check if your browser meets system requirements if your product requires you to use ONESOURCE Classic.
  1. When signing in to use ONESOURCE Classic, select
    View browser requirements
    .
  2. Update any components needed.
  3. Go back to sign in.
  4. And lastly, the 1st time you sign in, you're prompted to install an ActiveX control. Select
    Install ActiveX Control
     to install the various add-ons.

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