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How to Fix "Unable to Open Outlook Attachment" Issue?

Often Microsoft Outlook user encounters an error message mentioned below while opening or saving Outlook attachments, and it restricts them from accessing Outlook attachments and other Outlook files.

Error Cause:

The most common reasons for facing such unwanted error message are:

  1. When a user is restricted to access temporary Internet files folder maintained on the Server.

This error occurs when sub folder, which contains default copies of temporary Internet files, has reached its storage limit.

  1. Due to default security protocols, Outlook denies permission to access suspicious attachments, which may harm user’s Outlook database or other system files severely. Thus the Outlook attachments get automatically locked displaying either of the above displayed errors.
  2. When user tries to open Outlook attachments while Outlook PST files are in corrupt or inaccessible state.
  3. When user repetitively access same Outlook attachment, their temporary files with carrying the same file name stock up in the Temporary file folder. After a certain period, the Outlook platform denies to save temporary file of the same file name at the temporary location displaying above described error.
Error Solution:

Solution I: When the cause of error is associated with Temporary Internet folders:

  • Step 1.Click start and select run option.
  • Step 2.REGEDIT.EXE will appear, click on Edit and then opt Find option.
  • Step 3. Type OutlookSecureTempFolder in the Find dialog box.
  • Step 4. Locate the registry key that contains actual folder location. It may appear like:
  • Step 5.Now, note down the folder’s location.
  • Step 6.Go to Run option in the Start menu and type the particular location and click OK.
  • Step 7.The folder be automatically opened by default browser.
  • Step 8.Remove all the files present in the folder.
  • Step 9.Restart your browser and try opening the Outlook attachments, which you were unable to access.

Solution II: When the cause of error is associated with default security protocols:

If the errors are result of security restrictions then user must edit and restore the security settings in the Outlook registry. Now, medication of security registry keys depends upon the MS Windows version. Check out the steps to modify these keys version wise provided by Microsoft recovery experts. Here we have described steps for the oldest and the latest versions of Windows OS:

For the oldest version Window XP:

  • Step 1.Click start and select run option.
  • Step 2.Type following command and click OK.
  • Step 3.Welcome to System Restore page will appear.
  • Step 4.Select Create a restore point and click Next.
  • Step 5.Now a New page will open, here mention the new file restoration location and click create and subsequently click Close button.
  • Step 6.Again, repeat step 1, 2 and 3.
  • Step 7.Select Restore my computer to an earlier time option and click Next.
  • Step 8.When the new page appears, select the system checkpoint. A list will appear, click "Guided Help (Registry Backup)" and select Next button.
  • Step 9. A System restoration message will prompt, listing configuration changes made, click OK. The confirmation page will appear after it, click Next and OK button consequently.

For the latest version Windows 10:

  • Step 1.Click start and select run option. Type REGEDIT.EXE
  • Step 2.Mention administration password if password confirmation is prompted.
  • Step 3.After opening Registry Editor, trace the registry key that you want to modify.
  • Step 4.Now, Click on File menu and then select Export.
  • Step 5.The Export Registry File box will appear, mention the place where you want to restore the backup name of the backup file to identify it afterwards and Click Save.

User can follow the above-discussed steps to open Outlook attachments themselves without requiring any additional help. However, these steps are little complicated, but proved useful to many users. In case, the Outlook files still show errors then fix the issue by utilizing third party Outlook repair tool like Kernel for Outlook PST repair, which eliminates such errors instantly.



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