This worked for me, i can’t guarantee it’ll work for you

My company uses Cisco Jabber for their chat and softphone client. I noticed that the new 10.5 client running on Windows 8 allows spellcheck. Since my spelling is not exactly excellent, i found this to be a wanted feature. However it seems that my company did not have it enabled by default in the backend. Here is how to change it for your client.

Close Jabber if it is running.

Browse to C:\Program Files (x86)\Cisco Systems\Cisco Jabber

Open the “jabber-config-defaults.xml” file.

Add <userconfig name=”spell_check_enabled” value=”TRUE”/> to the <!–Options –> section of the file.

Save the file. (I had to change permissions to the jabber folder to allow my user to save there)

Open Jabber. You will now the the red “squiggly” line when you spell poorly, and are able to right-click for options.