SSL certificate error - Unable to validate certificate

David Woolley forums at
Tue May 23 18:31:33 EDT 2017

On 23/05/17 23:12, Frank Bratman wrote:
> Can you please help me. I have used this app for years and now a
> problem. I have accepted it many times.

It looks to me as though you have failed to keep your root certificates 
up to date (quite possibly an OS level thing) and gmail has started 
using newer one.  Using View Certificate may give a better clue.

More information about the Support mailing list