Windows Attachment Manager uses the IAttachmentExecute application programming interface API to find the file type, the file association, and to determine the most appropriate action to take. When you download files and save them on your disk, Windows adds specific metadata to these files. These metadata are considered to be attachments. When Windows adds metadata to the download files as an attachment, this is known as Zone Information. Now, the Zone Information is where the root of the matter lies.
When File Explorer opens a file, it reads the attached Zone information stored in the same location and checks to see if the file came from an unknown source or not.
If Windows finds that the file is unrecognized or came from unknown sources, it prevents you from opening it. Windows SmartScreen prevented an unrecognized app from starting. Running this app might put your PC at risk. If you wish to manually open a blocked file, right-click on the downloaded file and then select Properties. But, imagine you have to do this every time you download a file—that can be annoying and time-consuming. If you often download files from the internet or receive files as email attachments, you might want to completely stop your PC from blocking your 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 must be signed in as an administrator or you should request administrator rights to be able to stop downloaded files from being blocked.
From there, type "Regedit" and click Enter. A User Account Control prompt will pop up. When this prompt appears, click the Yes button to continue. If the Attachments key is absent within the Policies key, you'll have to create it. To do this, right-click on the Policies key, click New , click Key. This will create a new key, which you should then name "Attachments".
If you find that the Attachments key is already present, you can skip to the next step. Name it "SaveZoneInformation" and click Enter. Finally, to disable the Attachment Manager in Windows 10, double-click on the newly-created SaveZoneInformation value and change its value data to 1.
Click OK to finish. When you complete these steps, close the Registry Editor and restart your computer to apply the changes. Make sure to create a restore point just in case something goes wrong. This is How to Fix Downloaded Files from being Blocked in Windows 10 but if you still have some problem then follow the next method. Now if you need to enable or disable zone information do the following:. Aditya is a self-motivated information technology professional and has been a technology writer for the last 7 years.
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