For example, your friend sent you an attachment of an. See following screen shot. In this article, I will introduce a guidance to access blocked attachments in Microsoft Outlook. To access blocked attachments which Outlook thinks potentially unsafe in Outlook, you can do as following:. Step 3: Now you get into the Registry Editor window, open the Security folder with following paths:.
Step 5: Double click the new string of Level1Remove , then enter the file extended name in the Value data box, and click the OK button. For example, you want to access blocked attachments of. Note : To unblocked several kinds of files, just enter all of their extended names into the Value data box, and separate each extended name with semicolon ; , such as. If third-party file compression software is not available to you, you might want to request that the sender rename the attachment to use a file name extension that Outlook does not recognize as a threat.
For example, an executable file that has the file name extension. Ask the sender to resend the renamed attachment to you. After you receive the renamed attachment, you can save it to your computer and rename the file again to use the original file name extension. Follow these steps to save the attachment and rename it to use the original file name extension:. If you use Outlook with a Microsoft Exchange server and the administrator has configured the Outlook security settings, the administrator might be able to help you.
Ask the administrator to adjust the security settings on your mailbox to accept attachments such as the one that Outlook blocked. If these methods did not work for you, and you are comfortable with advanced troubleshooting, please try the steps in the "Advanced troubleshooting" section.
If you are not comfortable with advanced troubleshooting, unfortunately this content is unable to help you any more. For your next steps, you might want to ask someone for help, or you might want to contact Support. For information about how to contact Support, please visit the following Microsoft Web site:. If you do not use Outlook with an Exchange server or if the Exchange server administrator lets users change the Outlook attachment security behavior, use method 1: "Customize attachment security behavior.
Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it.
Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:.
Follow these steps to modify the registry and change Outlook's attachment security behavior. Click Start , and then click Run. Verify that the following registry key for your version of Outlook exists. Microsoft Office Outlook If the registry key does not exist, follow these steps to create it:. Under Edit , click New , and then click Key. For Outlook , type For Outlook , type 9. Under Edit , click New , and then click String Value. When you start Outlook, open the file types you specified in the registry.
Thank you for your feedback. Adaptavist Theme Builder 4. Labels parameters Labels: None exchange exchange Delete f-owa f-owa Delete c-owa c-owa Delete Enter labels to add to this page: Looking for a label? Just start typing. For example, you can rename file. Once the renamed file is sent or received , save it and rename it with the original extension using the following steps. If you use a Microsoft Exchange Server account and the Exchange Server administrator has configured your Outlook security settings, your administrator might be able to help you.
Ask the administrator to adjust the security settings on your mailbox to accept attachments that Outlook blocked. This procedure involves editing the registry in Windows. For more information about unblocking attachment file types, see the Microsoft Support article about blocked attachments in Outlook. File types blocked in Outlook File name extension File type.
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