Try a Force install https://accountants-community.intuit.... - Intuit Accountants Community

Try a Force install https://accountants-community.intuit.com/articles/1859961-how-to-perform-a-force-install-of-lacerte My guess is that will fix the issue.

Sometimes the log on window is hiding. In that cast try https://www.technipages.com/bring-off-screen-window-back-onto-screen

Here's wishing you many Happy Returns

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