Restart the QuickBooks Database Service
Usually, QuickBooks issues that relate to a multi-user mode can be sorted out by restarting the Database Server manager. Check out the following steps to restart the service related to the QuickBooks Database Server Manager. This method should aid in resolving Error code 193:0xc1.
• Hit on Windows + R keys on your keyboard, and then type services.msc.
• Next, press the Enter key to look in the list of services for the QuickBooks Database service, namely- "QuickBooksDBXX."
• You are now required to restart this service. For that, right-click on it and then choose the Restart option.
• Now, re-launch QuickBooks and go ahead with your usual operations to check if the error 193:0xc1 got fixed.
Read more: https://qbsenterprisesupport.com/quickbooks-error-193/