File not Saved Excel 2007

I have several users that are trying to save MS Excel documents to a network drive and are getting the error "File not saved". This is not tied to any specific OS; some are running XP, Vista, and Windows 7. Things we have tried are: disabled AV, added NetworkResiliency key to the registry, remapped all network drives, disabled offline files, and made sure there were no corrupt temp files in the shared drive area. The users are also getting a similar error when trying to save a MS word document but it also states that the network connection may be lost. as stated above all network drives have been remapped and are accessable. Has anyone elses seen this issue and been able to resolve it?
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Have you also checked the firewalls on the computers (+firewalls)?
sorry ->      + on the router(s)
Can you save other types of files there? For example, open up notepad and save a text document? If not, the directory or share permissions may be preventing this.

Make sure people have at least read/modify, full if your security policies permit it.
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As mentioned above, make sure the appropriate security/user group appears in the security tab for the shared directory.
bfpnaeechangeAuthor Commented:
The cause of this was a Microsoft update for Office 2007.  Once that was uninstalled, all was working normally.

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