Users of Office 2010 experiencing problems opening or saving emails to HowNow may be missing some dependencies in the Outlook Manifest file. To fix this, please add the code below to the outlook.exe.manifest file.
Check the outlook.exe.manifest file for the following code.This file is located in the same folder where outlook.exe is located in Program Files.
<dependency optional="yes">
<dependentAssembly>
<assemblyIdentity type="win32" name="Microsoft.Windows.Common-Controls" version="6.0.1.0" publicKeyToken="6595b64144ccf1df" language="*" processorArchitecture="*"></assemblyIdentity>
</dependentAssembly>
</dependency>
To place this text in the correct position, find the last </assembly> tag and add a few blank lines immediately before the < in it. Paste this code into that whitespace, and Save and Close the document. You’ll know if it’s been put in incorrectly because Outlook will refuse to open if it’s not in the right spot. This should fix this issue