You can install multiple versions of QuickBooks Desktop Enterprise (for example, this year's version of QuickBooks Desktop Enterprise as well as last year's version) on the same computer. However, all users of a particular company file must be using the same version of QuickBooks Desktop Enterprise. QuickBooks supports case-sensitive passwords. If you believe you are entering the correct password, but are still getting the message 'The password you typed is incorrect,' your password might include mixed case characters. Try the following. Enter the password with a space before or after the actual password.
Now is a good time to upgrade from QuickBooks versions 2016, 2015, 2014, 2013 2012, 2011, 2010, 2009, 2008, 2007, 2006, 2005, 2004. QuickBooks/Intuit products to QuickBooks 2018 Pro, Premier and Enterprise editions. Now paste your license key into the registration window instead of typing the license number.
![Enterprise Enterprise](/uploads/1/2/5/6/125602629/770271378.jpg)
If you are still unable to access your file, click the 'I forgot my password' link on the login screen and follow the prompts. Note: Be sure to write down and save your administrator password in a secure place. Passwords not only protect your company data, but are also required to access your company file if you upgrade your version of QuickBooks Desktop Enterprise. QuickBooks Desktop Enterprise allows multiple users to access the company file at the same time. As your company grows, you can purchase additional licenses, in increments of five, instead of buying additional copies of QuickBooks Desktop Enterprise.
To add additional licenses to your existing QuickBooks Desktop Enterprise license, go to the Help menu, click Manage My License, click Buy Additional User Licenses, then follow the onscreen instructions. To restore a company file.