"Cannot open Client XXX: No data files exist for this client" when trying to open 1040 clients

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Our Support department is closed on [[date]]. However, limited UltraTax CS phone support is available on that date from 9 AM - 5 PM ET due to the approaching deadline.

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A recent Windows 10 update may cause the error "Cannot open Client: No data files exist for this client" to appear when opening 1040 clients on Windows 10 workstations. Perform the following steps to check the version of Windows 10 in use:

  1. Click Start>Run or Win+R key combination
  2. In the resulting Run window, clear the input field, type winver and click OK.
  3. In the resulting window, look for the version number. 
  4. If you are on version 1709, consult your IT professional for help rolling back to a date before the Windows update was applied. 


If you are not on Windows 10, or if rolling back the update does not resolve the issue, see UltraTax CS: Error - "Cannot open Client XXX: No data files exist for this client"

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