Outlook 2013 Signature Pane and Stationary Pane Not Working [SOLVED, no kidding!]

Fixing the Dreaded Outlook 2013 Signature Pane and Stationary Pane Error

On Windows 7, 64bit with Office 2013, 64 bit, you also get event 27 in your Application event log "Outlook Error" with no real details, and the Outlook signature pane does not work anymore, plus stationary and fonts will not open up anymore. It is caused by a missing registry key called LocalServer32 and its associated REG_SZ keys.  Once you add the missing registry keys, you have to reboot your computer to see it working again.  Don't apply this fix to Office 2016 or Office 365! Furthermore, only apply this fix to 64 bit Office 2013.

For 32-bit installation:

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{0006F03A-0000-0000-C000-000000000046}\LocalServer32

For 64-bit installation

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{0006F03A-0000-0000-C000-000000000046}\LocalServer32

Edit the registry and add the LocalServer32 and Default keys containing the path to Outlook.exe.. you may just need to add the localserver32, here's the whole thing that you can import. (64bit)

Signatures, Stationary and Fonts

How to Fix (Windows 7 64 bit with Office 2013 64 bit)

Edit the registry and add this bit of registry magic.  You can also copy this bit of registry and save it to a file called import.reg, and then you can import the whole thing into regedit.

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{0006F03A-0000-0000-C000-000000000046}]

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{0006F03A-0000-0000-C000-000000000046}\InprocServer32]
"Assembly"="Microsoft.Office.Interop.Outlook, Version=15.0.0.0, Culture=neutral, PublicKeyToken=71E9BCE111E9429C"
"Class"="Microsoft.Office.Interop.Outlook.ApplicationClass"
"RuntimeVersion"="v2.0.50727"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{0006F03A-0000-0000-C000-000000000046}\InprocServer32\15.0.0.0]
"Assembly"="Microsoft.Office.Interop.Outlook, Version=15.0.0.0, Culture=neutral, PublicKeyToken=71E9BCE111E9429C"
"Class"="Microsoft.Office.Interop.Outlook.ApplicationClass"
"RuntimeVersion"="v2.0.50727"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{0006F03A-0000-0000-C000-000000000046}\LocalServer32]
"LocalServer32"="C:\\Program Files\\Microsoft Office\\Office15\\outlook.exe"
@="C:\\Program Files\\Microsoft Office\\Office15\\outlook.exe"

looks like this

Registry Editor

Source:   https://www.thewindowsclub.com/unable-to-add-signature-in-outlook