One of the most important Microsoft components needed to run QuickBooks is the .Net Framework. When I install Microsoft.Net or QuickBooks on Windows, QuickBooks raises error 1935. Support experts have determined that Error 1935 is a Windows error that affects not only QuickBooks, but also Norton Antivirus, Alchemy Catalyst, Pinnacle Studio, AutoCAD, and even other Windows applications such as Microsoft's own apps. ..QuickBooks Error code 1935usually occurs when there is a problem installing the .Net Framework. Some other reasons for the error will be discussed later in this article. We recommend that you follow the steps in the article for a quick fix.