Version 10.3.2 used to decrypt files sent to us.
Earlier today I decrypted one file just fine (of the two that we received). I went to do the other by right clicking -> symantec -> decrypt & verify and nothing would happen. The icon was not in the tray and pgptray.exe was running. So I rebooted.
Now no matter what I seem to do I get the error:
It is not possible to decrypt this message because your keyring does not contain usable private key(s) corresponding to any of the above public key(s)
On the message that I successfully decrypted earlier, the public key is listed as "1 unknown key(s)". On the other one it's listed as our key at support@ourdomain.com (which should be the first one as well).
The other file gives the exact same message, but does list "support@ourdomain.com" as the public key.
Both my key and our support key are listed as verified in my keyring. I've gone back and imported from the automatic backups with the same results. I moved PCs a few months ago and went back to those backups from July and get the same results from then as well.