GpgOL Incompatible Addons

The following Outlook add-ins (aka add-ons) are known to cause problems together with GpgOL.

Egress Outlook Add-in

Version - Unknown.

Causes GpgOL to not work at all.

ESET Endpoint Anti-Virus

Version - Unknown.

Signed / Encrypted mails are left blank.

Known Workarounds

Solution in ESET go to the mail client settings: https://help.eset.com/ees/7/en-US/idh_config_emon_clients.html

disable checking mail: "Received e-mail"

comment: because if it finds something in the mail it will move it to a safe folder. And if not, we can decode the message. This will also fix the plug-in disabling error due to too long loading time.

or less secure, which will work for any type of message, disable: "Enable email protection by client plugins"

FTAPI Outlook Add-In

Version - Unknown.

Outgoing Messages are not signed and only encrypted to the sender, contrary to what was selected.

GFI Mailarchiver plugin

Version - Unknown.

Random crashes.

Known Workarounds

None.

Further Details

See: https://dev.gnupg.org/T4942

GData Outlook Anti Virus plugin

Version - Unknown.

Hidden attachments and broken signature Verification in sent mails.

Known Workarounds

None.

Google Apps Sync

The Ggogle Apps Sync Addon makes it impossible for GpgOL to send out OpenPGP/MIME or S/MIME Mails.

Known Workarounds

GpgOL since Version 2.0.5 automatically detects Google Apps Sync accounts and warns the user / switches to "No-MIME" OpenPGP. This does not work with attachments.

Technical Details

See: https://dev.gnupg.org/T3545

MailStore Outlook Add-in

Version (9.0.3.9873 tested)

Known Workarounds

None.

Technial details

The same problem as the TITUS Addon. We do not see the "Read" event and never get the option to decrypt / verify the mail. See: https://dev.gnupg.org/T3934

Mimecast for Outlook

Decrypt / Verify does not work, same as with TITUS and MailStore.

Technical details

Not available. reported in: https://dev.gnupg.org/T4692

Known Workarounds

According to https://dev.gnupg.org/T4692 an update to Gpg4win-3.1.10 helped.

PDF Converter Outlook Add-in

Version 7.1

Known Workarounds

None.

Symantec Endpoint Protection

Version - Unknown.

Signed / Encrypted mails are left blank. Reported here: https://forum.gnupg.org/t/outlook-2016-blank-signed-and-encrypted-emails/3257/7

Can also cause heavy workload by triggering many "Read" events in parallel.

Known Workarounds

None.

Further Details

See: https://dev.gnupg.org/T4287

TITUS Message Classification

Version ?

Causes GpgOL not to decrypt / verify any content. Mails will be shown as empty and without crypto state. They will sometimes have the crypto icon in the messagelist.

Known Workarounds

None.

Technical Details

The TITUS Addon causes the "Read" event in Outlook to be blocked and GpgOL does not receive that event. As GpgOL does the decryption in the "Read" event, decryption does not happen.