How to automatically unblock files on Windows 10
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The Attachment Manager is included in Windows to help protect your PC from unsafe attachments that you might receive with an e-mail message and from unsafe files that you might save from the Internet. If the Attachment Manager identifies an attachment that might be unsafe, the Attachment Manager prevents (blocks) you from opening the file, or it warns you before you open the file. Show
It uses the IAttachmentExecute application programming interface (API) to find the file type, to find the file association. When one of these applications saves a downloaded file on a disk formatted with NTFS, then it updates the metadata for the file with the zone it was downloaded from. The metadata is saved as an Alternate Data Stream (ADS). If you wish to unblock a downloaded file, you can do so by right-clicking it, selecting Properties and clicking on Unblock. The following determine whether you are prevented from opening the file or whether you are warned before you open the file:
The Attachment Manager classifies files that you receive or that you download based on the file type and the file name extension. Attachment Manager classifies files types as high risk, medium risk, and low risk.
If you like, there is a "Do not preserve zone information in file attachments" policy that allows you to manage whether Windows marks file attachments with information about their zone of origin (such as restricted, Internet, intranet, local). If this policy is enabled, it will effectively disable downloaded files from being blocked. This tutorial will show you how to enable or disable downloaded files from being blocked for all users in Vista, Windows 7, Windows 8, and Windows 10. You must be signed in as an administrator to enable or disable downloaded files from being blocked. This will not affect blocked files that have already been downloaded before setting this policy.  By not preserving the zone information, Windows cannot make appropriate risks assessments. This can cause a security risk to your PC by not having downloaded files blocked by default anymore.
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Blocked files OPTION ONE To Enable or Disable Downloaded Files from being Blocked in Group PolicyThe Local Group Policy Editor is only available in the Windows 10 Pro, Enterprise, and Education editions. All editions can use Option Two below. 1 Open the all users, specific users or groups, or all users except administrators Local Group Policy Editor for how you want this policy applied. 2 Navigate to User Configuration, Administrative Templates, Windows Components, and Attachment Manager in the left pane of the Local Group Policy Editor. (See screenshot below) 3 In the right pane of Attachment Manager, double click/tap on the Do not preserve zone information in file attachments policy to edit it. (see screenshot above) 4 Do step 5 (Enable) or step 6 (Disable) below for what you would like to do. 5 To Enable Downloaded Files from being Blocked
A) Select (dot) either Not Configured or Disabled, click/tap on OK, and go to step 7 below. (see screenshot below) Not Configured is the default setting. 6 To Disable Downloaded Files from being Blocked A) Select (dot) Enabled, click/tap on OK, and go to step 7 below. (see screenshot below)
7 When finished, you can close Local Group Policy Editor if you like. OPTION TWO To Enable or Disable Downloaded Files from being Blocked using a REG fileThe downloadable .reg files below will add and modify the DWORD value in the registry keys below. SaveZoneInformation DWORD (delete) = Enable 1 Do step 2 (enable) or step 3 (disable) below for what you would like to do. 2 To Enable Downloaded Files from being Blocked for All Users This is the default setting. A) Click/tap on the Download button below to download the file below, and go to step 4 below. Enable_block_downloaded_files.reg Download 3 To Disable Downloaded Files from being Blocked for All Users A) Click/tap on the Download button below to download the file below, and go to step 4 below. Disable_block_downloaded_files.reg Download 4 Save the .reg file to your desktop. 5 Double click/tap on the downloaded .reg file to merge it. 6 When prompted, click/tap on Run, Yes (UAC), Yes, and OK to approve the merge. 7 You could now delete the downloaded .reg file if you like. That's it, Related Tutorials
How do I stop Windows 10 from blocking files?To stop Windows 10 from blocking you from opening your files, you need to prevent it from adding Zone Information to the files you download. You can do this by configuring the Attachment Manager manually using the Local Group Policy Editor or the Registry Editor.
How do I stop Windows from blocking everything?1 Answer. Launch Windows Defender Security Center from your Start menu, desktop, or taskbar.. Click the App and browser control button on the left side of the window.. Click Off in the Check apps and files section.. Click Off in the SmartScreen for Microsoft Edge section.. How do I unblock all files at once?Now, right-click a file or a folder in File Explorer and select Show more options. From the full context menu, select Unblock. Right-click a folder to unblock all its files at once.
How do I disable file blocking?In the Options window, select Trust Center > Trust Center Settings. In the Trust Center window, select File Block Settings, and then clear the "Open" or "Save" check box for the file type that you want to open or save. Clear the option means allow user to open or save the file.
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