OWA Signature Update with Exchange Web Services - exchangewebservices

Question

We're using Exchange Web Services to set user signature in Outlook Web Access. It works great, we see the signature under Options>Settings and the "Automatically include my signature on messages I send" check box is checked. We also set this programmatically.
However, when the user creates a new e-mail message in OWA the signature does not show up. A work around for this is to go to Options>Setting, uncheck the "Automatically include my signature on messages I send" check box , Save, check the check box again and save.
The code we use to set the signature looks something like this:
Folder rootFolder;
UserConfiguration OWAConfig;
rootFolder = Folder.Bind(service, WellKnownFolderName.Root);
OWAConfig = UserConfiguration.Bind(service, "OWA.UserOptions",rootFolder.ParentFolderId, UserConfigurationProperties.All);
OWAConfig.Dictionary["signaturehtml"] = "Hello World";
OWAConfig.Dictionary["autoaddsignature"] = "True";
OWAConfig.Update();
Any idea how to get around this problem?

Answer 1

I have some old code that does the same thing which is working fine. I have pasted the code below. There are a few minor differences between my code and yours. I am not sure if they make a difference but you may want to try it out. Here is an extract of my code with the differences highlighted with a comment:
private void SetSettingValue(UserConfiguration owaConfig, string propName, object propValue)
{
if (owaConfig.Dictionary.ContainsKey(propName))
{
owaConfig.Dictionary[propName] = propValue;
}
else
{
// Adds a key if it does not explicitly exist.
// I am not sure if it makes a difference.
owaConfig.Dictionary.Add(propName, propValue);
}
}
public void AddSignature()
{
// Extract
UserConfiguration OWAConfig = UserConfiguration.Bind(
service,
"OWA.UserOptions",
WellKnownFolderName.Root, // Binding to Root and not Root.ParentFolderId.
UserConfigurationProperties.Dictionary // Binds to Dictionary and not to All.
);
SetSettingValue(OWAConfig, "autoaddsignature", true);
SetSettingValue(OWAConfig, "signaturehtml", html);
OWAConfig.Update();
}