How to Resolve “The Serial Number You Entered Is Invalid” During the installation or upgrading process
To ensure that this problem can be handled, the following items must be verified. The following are the details
Ascertain that the right download URL was used to obtain the installation file.
If the problem notice persists, contact Accounting Advice for a new serial number.
If trying to update to a newer version of Sage 50, the user must first download the most recent version of Sage 50 Software and install it as the new serial number.
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