Issue with expired digital certificate ..



We have protected all our Office add-ins with a digital certificate
generated by our systems team. Now the certificate has expired and out IT
department created a new certificate with the same name and DN. still my old
excl files throw error about the certificate expiry.

Is there any way I can use the old signed excel files without re-signing
with a new certificate?
Is there any way that we can renew the certificate, so that existing files
will work without re-signing?

Best Regards,

Richard M. Hartman

You renew your certificate with the issuing authority (Verisign, for

If these were self-generated certificates then I do not know ... I think you
would have to re sign things with the new one.

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