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.

 

For more information contact Microsoft customer services number+1-855-955-2061.

 

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.

 

For more information contact Microsoft helpline number+1-855-955-2061.

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

 

 

For more information contact Microsoft office support number+1-855-955-2061.
Excel

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 more information contact any issue Microsoft phone number+1-855-955-2061.

For source article:

https://support.microsoft.com/en-in/help/922850/error-message-in-office-when-a-file-is-blocked-by-registry-policy-sett