ERROR: Cannot send. Unable to write word to user dictionary.

ERROR: Cannot send. Unable to write word to user dictionary.

Document number: 26055

The Lotus Notes error message "Cannot send. Unable to write word to user dictionary." means that either:

Connected Backup is currently backing up the dictionary and you cannot access it at this time; or
The user dictionary has become corrupt and a new one must be created. The words added to the dictionary can be preserved provided that they are copied prior to deleting the current dictionary.

To resolve the error:

If Connected Backup is running at the time you are trying add a word to the dictionary, wait for Connected Backup to complete its task, then try again. You may need to close Lotus Notes and re-launch it.
If Connected Backup is not running, follow these steps to create a new dictionary:

Open Windows Explorer and navigate to the c:\apps\notes\data folder.
Find the user.dic file and double click to open it.
Highlight all of the words in the file. Select Edit from the menu bar and select Copy from the drop down list. Close the user.dic file.
Click the New Memo button in the Lotus Notes Inbox. Select Edit from the menu bar and select Paste from the drop down list.
Save the new message with the words from the dictionary as a Draft and close Lotus Notes.
Right mouse click on the user.dic file in the c:\apps\notes\data folder from Windows Explorer and select Delete from the drop down list.
A window will appear that asks, "Are you sure you want to send user.dic to the Recycle Bin?" Click Yes to delete the file.
Exit Windows Explorer once the file has been deleted.
Re-launch Lotus Notes. A new user dictionary will automatically be created.
Send the saved Draft with the words copied and pasted from the old user dictionary to yourself. As the spell check comes upon unrecognized words, click Add to add the word to the new user dictionary.

Messages should now successfully send without receiving the error message.