Outlook XP, which is part of the Office XP package, blocks certain e-mail attachments that may contain viruses. Unfortunately, this feature often proves to be a nuisance when you receive files from colleagues that are guaranteed to be virus-free.
Below you will find a list of all file extensions that have been blocked. Until now, you had to use tricks to get around this, for example by compressing the file as a ZIP, but this is not a compromise in the long term. To completely override this blockade, proceed as follows.
1. Click here to download a small registration file. Make a note of the path, open it and double-click on the file Outlook98ME.reg.
2. After confirming twice, the values are entered in the Windows registry. Outlook now allows all attachments.
Manually block certain attachments
However, if you would like to block some attachments, you can do so from now on:
1. In the start menu, open Execute and enter in the command line regedit followed by Enter. This reveals the Windows Registry Editorwhich can be used in exactly the same way as Explorer.
2. Now scroll through the keys (folders) HKEY_CURRENT_USER\S oftware\Microsoft\Office\10.0\Outlook\Security and double-click on the value in the right-hand pane Level1Remove.
3. In the small window that appears there is a line that contains all authorized attachments.
4. To block a particular file type, simply select and delete it. The deleted file will then be blocked.
Here is the list with all File typeswhich are blocked:
| File type | Description |
| ADE | Microsoft Access project extension |
| ADP | Microsoft Access Project |
| BAS | Visual Basic class module |
| BAT | Rod processing file |
| CHM | Compiled HTML help file |
| CMD | Microsoft Windows NT command script |
| COM | Microsoft MS DOS application |
| CPL | System control option |
| CRT | Security certificate |
| EXE | Program, application |
| HLP | Help file |
| HTA | HTML program |
| INF | Installation information |
| INS | Internet name service |
| ISP | Internet provider setting |
| JS | JScript file |
| JSE | Encrypted JSCRIPT file |
| LNK | Link |
| MDA | Microsoft Addecc-Add-In |
| MDB | Microsoft Access database |
| MDE | Microsoft Access MDE database |
| MDZ | Microsoft Access Assistant |
| MSC | Microsoft console |
| MSI | Windows Installer Package |
| MSP | Windows Installer Patch |
| MST | Visual Test source files |
| PCD | PhotoCD-IMAGE |
| PIF | Link with MS DOS program |
| REG | Registration entries |
| SCR | Screensaver |
| SCT | Windows Script Component |
| SHS | Shell Scrap object |
| URL | Internet link |
| VB | Visual Basic file |
| VBE | Encrypted VB file |
| VBS | Visual Basic Script |
| WSC | Windows Script Component |
| WSF | Windows Script file |
NOTE FOR NEW PUBLICATION: This article was produced by Sandro Villinger and comes from the Windows tweaks archive, which has been built up since the late 1990s.
