Outlook typing issue

Three of my clients have the same issue in Outlook, they are all in the same company, however, note that they use Outlook 2010 with an IMAP or POP3 account, not with Exchange.
When they type an email, letters and/or spaces are somehow missing.
The problem occurs only in Outlook so I do not believe this is a keyboard issue.
Any suggestions as to what I can check to resolve this issue
Thank you
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Did you try running office repair or installing office updates? What type of email server they are using?
I would agree try to run office updates and make sure it's at the correct service pack level and patched. If that doesn't work perform a repair installation. If it's still giving the same issue I would check the list of add-ins for outlook and see if anything is disabled or missing. Hope that helps.
data-informatiqueAuthor Commented:
The last office updates were done on September 2
They are using an external mail server with panelboxmanager
The add-ins were recently checked and all unused add-in was disabled
I will attempt a repair tonight but I was wondering if any of the outlook switches could help and if so, which one
Md. MojahidCommented:
try to remove all recent office update and also scan computer with updated antivirus.

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