Have you changed your audio driver to DirectSound? A lot of times a new installation seems to defaul to ASIO, which tended to give my installation problems.

Had problems after reinstalling Windows 10. Error 7 - no sound. The first part of the following solution worked for me. I post this hoping it will help someone. Why the Help Desk doesn't suggest this right away is a mystery to me. After a lot of digging, I found this on the Finale Forum.

Close Finale
Hold down your Windows key (to the left of the spacebar, between the <Ctrl> and <Alt> keys) and type the letter "R" - this will open the 'Run' dialog box
Type "%appdata%" (without quotation marks) and click 'OK'
Navigate to MakeMusic\Finale 26
In this folder, double-click the file named "FINMIDI.ini" - this should open the file in a text editor (e.g. Notepad)
Near bottom of the file until you see a section that looks like this:
[AUDIOAPIPREFS]
EngineLoaded=1
ASIOEnabled=1
DirectSoundEnabled=1
WASAPIEnabled=1
Make sure that the EngineLoaded value is 1, so that line should now read "EngineLoaded=1"
Change the ASIOEnabled value from 1 to 0, so that line should now read "ASIOEnabled=0"
Change the WASAPIEnabled value from 1 to 0, so that line should now read "WASAPIEnabled=0"
Save and close the file, then relaunch Finale to see if the issue has been resolved


--Disable Exclusive Mode and confirm Sample Rate--
1. Close Finale and all other open applications (your browser window can stay open).
2. Press the WINDOWS key+R, the Run window opens.
3. Enter in the follow "mmsys.cpl" without the quotes and click OK.
4. The Sound Control Panel launches.
5. Double-click the Default Device (the one with the green check mark) to open the Speaker/Headphones Properties.
6. Choose the Advanced tab.
7. Under Default Format, select 44100 Hz in the dropdown menu.
8. Deselect Allow applications to take exclusive control of this device.
8. Click Apply and OK to close both windows.
9. Relaunch Finale.