Thanks for reaching out to us, leeanke. Let me provide you with details about why you're getting an error 1603 when updating your QuickBooks Desktop (QBDT) Pro 2018.
First off, it is important to note that QuickBooks Desktop has a 3-year life cycle. This means that you won't be able to update your QBDT Pro 2018 since it was already discontinued in 2021. Your access to QuickBooks Desktop Payroll, Desktop Payments, live technical support, Online Backup, Online Banking, and other services through QuickBooks Desktop Pro 2018 software will also be discontinued. Additionally, this means you won't receive critical security updates to protect your data.
To learn more about QuickBooks Desktop service discontinuation, you can refer to this article: QuickBooks Desktop service discontinuation policy.
To protect your business data, maintain access to our live technical support, and avail of our Intuit services including QuickBooks Desktop Payroll, QuickBooks Desktop Payments, and online feeds, I recommend upgrading to our QuickBooks Desktop Enterprise.
Before upgrading to a new desktop version, ensure your computer meets the system requirements. This will help avoid any unexpected issues during the upgrade. Check out these articles for instructions and to explore the new program's features.
Keep your post coming if you have further questions about updating and upgrading your QuickBooks Desktop version. The Community is available to lend a helping hand.
