Error message in Office when a file is blocked by registry policy settings
A file is blocked when you open or save the file in a Microsoft Office program. In this situation, you may receive an error message that resembles one of the following:
Ø You are attempting to open a file that is blocked by your registry policy setting.
Ø You are attempting to open a file type <File Type> that has been blocked by your File Block settings in the Trust Center.
Ø You are attempting to open a file that was created in an earlier version of Microsoft Office. This file type is blocked from opening in this version by your registry policy setting.
Ø You are attempting to save a file that is blocked by your registry policy setting.
Ø You are attempting to save a file type <File Type> that has been blocked by your File Block settings in the Trust Center.
More Information
For more application-specific resolution methods that you can try, see the following articles
The issue can also occur when you open an embedded or linked Office file in an Office application. For example, you have a Visio object embedded in a Word document. When you try to open the Visio object, you receive a similar error message in Word. To resolve this issue, you must change the File Block settings in the application that owns the blocked file type. In this example, you must change the File Block settings in Visio instead of in Word. If the error message mentions Excel file type, go to Excel to change the File Block settings.
The following tables contain the all DWORD values that you can add to the FileOpenBlock subkey and the corresponding file types.
Word
DWORD value
|
File types that are affected
| |
OpenXmlFiles
|
.docx, .dotx, .docm, .dotm, .xml (Word Flat Open XML)
| |
BinaryFiles
|
.doc, .dot
| |
HtmlFiles
|
.htm, .html, .mht, .mhtml
| |
XmlFiles
|
.xml (Word 2003)
| |
RtfFiles
|
.rtf, .doc (Word 95), .doc (Word 97 release version)
| |
Converters
|
All file formats that are available by using a text converter (including the Office Compatibility Pack)
| |
TextFiles
|
.txt
| |
WllFiles
|
.wll
| |
InternalFiles
|
All Word file types that have a non-RTM nFib value
| |
FilesBeforeVersion
|
All Word files that have an nFib value lower than the minimum nFib value as set by an administrator
|
DWORD value
|
File types that are affected
|
OpenXmlFiles
|
.xlsx, .xlsm, .xltx, .xltm, .xlam
|
BinaryFiles
|
.xls, .xla, .xlt, .xlm, .xlw, .xlb
|
Binary12Files
|
.xlsb
|
HtmlandXmlssFiles
|
.mht, .mhtml, .htm, .html, .xml, .xmlss
|
XmlFiles
|
.xml
|
DifandSylkFiles
|
.dif, .slk
|
TextFiles
|
.txt, .csv, .prn
|
XllFiles
|
.xll
|
Converters
|
All file formats that are available by using a text converter (including the Office Compatibility Pack)
|
DatabaseandDatasourceFiles
|
.odc, .udl, .dsn, .dbc, .dqy, .iqy, .oqy, .rqy, .mde, .mdb, .dbf, .ade, .adp, .cub
|
LotusandQuattroFiles
|
.wk1, .wk4, .wj3, wk1 FMT, .wks, .wk3, wk3 FM3, .wj2, .wq1, .fm3, .wj1
|
LegacyBinaryFiles
|
Microsoft Excel 4.0 Charts (.xlc) files (Office 2003 SP3)
|
LegacyDatabaseAndDatasourceFiles
|
DBF 2 (dBASE II) (.dbf) files (Office 2003 SP3)
|
PowerPoint
DWORD value
|
File types that are affected
| |
OpenXmlFiles
|
.pptx, .pptm, .potx, .potm, .ppsx, .ppsm, .ppam, .thms, .xml
| |
BinaryFiles
|
.ppt, .pot, .pps, .ppa
| |
HtmlFiles
|
.mht, .mhtml, .html, .htm
| |
Outlines
|
.rtf, .txt, .doc, .wpd, .docx, .docm, .wps
| |
Converters
|
This policy will prevent the opening of PowerPoint presentations that are opened by using third-party converters or the Office Compatibility Pack.
| |
FilesBeforePowerPoint97
|
This policy will prevent the opening of files older than PowerPoint 97 that have file types such as .ppt, .pot, .pps, and .ppa.
|
For source article:
https://support.microsoft.com/en-in/help/922850/error-message-in-office-when-a-file-is-blocked-by-registry-policy-sett
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