I'm having the same issue. I'm using Quickbooks Pro Plus 2022 and have Microsoft Home and Student 2021. I can edit and save the original letter template; however, when I try to create a customer estimate letter, it just spins when I click next instead of opening the word program. I read the suggestions and performed the 'verify' and 'rebuild data' tools within QuickBooks. I also just installed the Quickbooks update, then restarted my computer. I then tried to create the letter again, but it did the same thing. None of my customer letter templates open. Please help!