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         Article ID: 1238 
        Last updated: 14 Feb, 2023 
    If you receive this error message when trying to license TaxCalc, it means that: 
 However, if you have successfully purchased or renewed your software, there might be an issue with the system clock on your computer. The licensing mechanism is date sensitive and a difference of over 24 hours can cause a problem. Follow these steps to fix the problem: 
 If you still can't access the software, contact our support team for further assistance. 
 
	        
        
        
            
        
            
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