Hi Steven,
According to your description, the problem is that you couldn't open some attachments in Outlook 2010 until you set the GP :Do not preserve zone
information in file attachments and now opening the attachment works fine. But now some attachments come up with "Not enough memory to run Microsoft excel" when clicking the attachment to preview it.
Issue:
If you receive a file it may have crossed the internet at some stage in its journey to you (eg: e-mail, FTP, etc). This means the file may be marked
by the Microsoft Attachment Manager as blocked.
You can check if a file is blocked by displaying its properties like this: select
one file, right-click, choose Properties.
Click on the 'Unblock' button to tell Windows to remove the 'unsafe' marker.
FAT/FAT32 volumes are not affected.
Attachment Manager is unable to mark files that are stored on FAT/FAT32 volumes. Only NTFS volumes are affected.
Disabling the Attachment Manager( You have finished it):
The Attachment Manager can be disabled.
The steps to do that are outlined below:
1.Run the 'Group Policy Object Editor' (gpedit.msc) either from the Command Prompt or using the 'Run' command in the Windows Start Menu. You also
can using Domain Group Policy Object Editor, if you have joined a domain.
2.Expand the node 'User Configuration' >> 'Administrative Templates' >> 'Windows Components' >> 'Attachment Manager'.
3.Right-click on the third option: Do not preserve zone information in file attachments. Choose 'Properties'.
Select 'Enabled' (Enabled would mean that 'Do not preserve zone information in file attachments' is enabled, which in effect will stop Windows from
storing the zone information in file attachments). Click OK to close the dialog box.
Cannot preview some attachment
follow these steps to check:
1.
Please
let the problematic user log on to the console of the terminal server
to check whether the same issue exists.
2.
Is any policy set to the Office temp files cache to another location. For example,
%AppData%\Roaming\Microsoft\Excel\, from C: migrate to D:.
3.
You can check it in Office 2010 Excel File menu, click Options, click Save in the left panel, in the right panel you can find the AutoRecover file location
and Default file location. Make sure that users have read and write permissions in both folder.