To contact QuickBooks Technical Support at 855-200-0590, follow these steps: Dial the number provided. Listen to the automated menu options. Select the appropriate option for technical support. If prompted, enter any relevant account information. Hold the line until connected to a live support representative. Explain your technical issue clearly and provide any necessary details. Follow the instructions provided by the representative for assistance. Note down any reference or case number for future follow-up if needed. This process ensures you can reach QuickBooks Technical Support and receive assistance for your software-related issues.