Skip to main content
Avalara Help Center

How do I resolve a "Signed/Expiration date mismatch" error in CertCapture?


You are attempting to Validate a Certificate and get an error "Error creating new certificates:....Signed/Expiration date mismatch. Signed date YYYY-MM-DD must be on or before the provided expiration date YYYY-MM-DD." indicating it could not be created.


Avalara CertCapture


  • Review the dates, the signed date has to be earlier (or the same date as) the expiration date. 
  • Correct the dates 
  • Finish processing the Stack