HKEYCURRENTUSERSoftwareMicrosoftOffice16.0OutlookSecurity; In the right pane, double-click OutlookSecureTempFolder. In the Value Data field, type C:Securetempoutlook and then click OK. Exit Registry Editor and restart the computer. I think this will resolve the Cannot open or save Email Attachments Issue. Feb 02, 2019 Moreover, it seems the issue just occurred in the outlook 2016 on win 10, please open the sender’s outlook 2016 on win10 with Safe Mode, and then send a test email to 2 recipients, after that please check if it can make any difference on the recipients side.
Microsoft Outlook is a great application for sending/receiving emails, managing tasks, contacts, calendar and organizing your files in folders for better access.
Since it comes as part of Office suite, it is but natural to expect other formats such as Word, Excel files to be easily accessible via Outlook. However, Outlook shows an error:
“Word experienced an error trying to open the file”
'Microsoft Outlook (Protected View) has stopped working'
“The file is corrupt and cannot be opened”
The prompt also asks you to try some suggestions:
Check the file permissions for the document or drive.
Make sure there are sufficient free memory and disk space.
Open the file with the Text Recovery converter.
These errors show up as Office trust settings prevent you from opening untrusted files.
Follow these steps to get rid of this error:
- Open Microsoft Word
- Go to File -> Options -> Trust Center.
- Now click on Trust Center Settings.
- Click Protected View in the left pane.
- Now uncheck the box: Enable Protected View for Outlook attachments.
- Click OK to save changes in Trust Center window.
- Click OK in Word Options.
Now close your Microsoft Word document and attempt to open an email with a Word document attachment.
You can repeat all the above steps in Microsoft Excel as well
If the problem still persists, it could be due to an incorrect registry entry for the preview handler.
Verify the result again after adding the correct registry entry.
- Press Windows +R to open Run window.
- Type regedit and hit Enter.
- Go to the following folder:
HKEY_LOCAL_MACHINE SOFTWARE Microsoft Office ClickToRun REGISTRY MACHINE Software Microsoft Windows CurrentVersion Preview Handlers
- On the right pane, right-click on an empty space. Select New and click on String Value.
- Double click on a newly created string and enter these details:
Value Name: {84F66100-FF7C-4fb4-B0C0-02CD7FB668FE}
Value Date: Microsoft Word previewer
Repeat the procedure for Excel:
String: {00020827-0000-0000-C000-000000000046}
Value: Microsoft Excel Previewer
Note that it is important to back up the entire registry before any deletion or modification. Click to know more about different types of Outlook problems and solutions.
Repair corrupt PST files using Remo Repair Outlook
If the PST file is corrupted and you are unable to access any information, you can repair the file using Remo Repair Outlook software.
All the steps on how to repair Outlook are given in simple steps to comprehend.

Microsoft Outlook In Mac Double Open Attachments
One of the best things about the software is its non-destructive mechanism. The software reads the file, extracts contents from the file and then creates a new healthy file by fixing all the issues.
Outlook On Mac
Remo Repair Outlook helps you repair oversized PST files as well. If you accidentally deleted a folder on Outlook and looking for ways to recover it, Remo Repair Outlook has the best solution.
Microsoft Outlook For Mac Updates
The PST recovery tool works on password protected and compressed files as well. Remo Repair Outlook software works on all versions of Windows and Mac Operating systems.