An empty email cannot be signed or encrypted

Gpg4win help-en
1

Hello!

I recently got the message:
An empty email cannot be signed or encrypted

When I open Outlook 365 gpg4win 4.02. want to sign or encrypt something.

All this under Windows 11:

I had already uninstalled all addins and also uninstalled and reinstalled gpg. It came all of a sudden.

Warm greetings
Harold

2

I’ve tried a few things now. Reinstalled Office, reinstalled GPG4win, reset Windows 11 with recovery when still worked. Nothing helped.

Finally I tried all GPG4Win backwards. With version gpg4win 3.1.5-1 I can sign and encrypt again.

Was there an Office update that gpg4win can’t handle? Or where is the mistake?

3

Hi Harald,

something must have changed if it worked and then stopped working.

  • I assume that it did not was the Gpg4win version, so it must be something else.
  • Additionally your key material stayed the same.

Yes this could have been an update with Outlook or Windows itself.

Regards
Bernhard

4

It must have changed, because the old Gpg4win 3.1.5 version works.

Nothing had changed on my computer. I was able to sign emails a few minutes earlier. And when I wanted to answer the next email two minutes later, it didn’t work anymore!

5

I know someone on the forum https://dev.gnupg.org/ who also has this message.

6

This seems to be a defect caused because GpgOL cannot create some temporary files, it wants to use in some settings. In most setups, it seems to work fine.

For followups, see https://dev.gnupg.org/T5926