Find, replace

I'm using Trados 2024 and recently updated the program. The issue is that find and replace functions does not work. The buttons in the ribbon are grayed out and keyboard shortcut does not work. Referring to the discussion in the forum, I tried resetting layout but it didn't work. I also tried renaming three folders mentioned in the discussion by adding _old to the ends of folder names. Then I restarted Trados, but the functions do not work. I need help.

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