Differences

This shows you the differences between two versions of the page.

--- class_not_registered [2019/01/27 11:28]
+++ class_not_registered [2019/01/27 11:28] (current)
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+======  ======
+==Description==
+Class Not Registered error message when opening a word document from SMS marketing or Control reporting.
+===== Explanation =====
+When opening a Word report, SMS and Control have to lookup the version of Word to open.  This is done inside the registry.  It works something like this:
+  * Cyrious invokes the OLE application "Word.Application".
+  * The OLE engine looks for HKLM\Word.Application in the registry key and finds the programs' CLSID.  This should be the CLSID of the most recent version of Word installed.
+  * Cyrious looks in the CLSID key in HKEY_Classes_Root\CLSID\ and finds the LocalServer32 default path.  This path is used to start Word to handle the document
+The error indicates that one of these paths is not found or correct.  This is usually caused by one of the following:
+  - Word not being installed on the system.
+  - Word not being installed correctly on the system.
+  - Anti-virus and anti-spam software often remove these links to prevent spamming software from being able to invoke Word or other Office applications.
+  - Anti-virus and anti-spam software may inject themselves between any request to look-up the CLSID location.
+==Resolution==
+  - Check that Word is installed on the computer and runs fine.  If not, then you need to install/reinstall Word.
+  - Find a Word document (.doc) in Windows Explorer and double-click on it.  See if you get the same results as from Control.  (This doesn't change the results, but at least confirms if the problem is unique to Control.)
+  - Check the Anti-Virus options to ensure they permit external programs to make OLE calls to Word.
+  - Using the MS Office Installation CD, run the Repair utility.  This will reestablish the registry entries.