QuickBooks Error C=43 may have hampered your working with QuickBooks.
It would have occurred due to:
Knowledge harm in the QuickBooks.
To fix the Error:
Download the Digital certificate
Open the QBW32.exe file and reach to the Digital signature tab from properties and install this certificate.
Once done, restart your PC.
For more help on any issue, you can call QBSsolved at +1(888) 910 1619.