A fax application that uses the Fax service client APIs may crash randomly on a computer that is running Windows Vista or Windows Server 2008

Symptoms

When you run a fax application that uses the Fax service client APIs on a computer that is running Windows Vista or Windows Server 2008, the application may crash randomly.

This issue occurs if you leave some settings blank in the Sender Information dialog box.

Note To open this dialog box, start Windows Fax and Scan. Then, on the Tools menu, click Sender Information.

Cause

This issue occurs because of a problem in Fxsapi.dll. This causes an access violation if some settings in the Sender Information dialog box are blank.

Resolution

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft website:

http://support.microsoft.com/contactus/?ws=supportNote The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

To apply this hotfix, you must be running one of the following operating systems:

  • Windows Vista Service Pack 2 (SP2)

  • Windows Server 2008 Service Pack 2 (SP2)

For more information about how to obtain a Windows Vista service pack, click the following article number to view the article in the Microsoft Knowledge Base:

935791 How to obtain the latest Windows Vista service pack

For more information about how to obtain a Windows Server 2008 service pack, click the following article number to view the article in the Microsoft Knowledge Base:

968849 How to obtain the latest service pack for Windows Server 2008

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The global version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.

Windows Vista and Windows Server 2008 file information notes

Important Windows Vista hotfixes and Windows Server 2008 hotfixes are included in the same packages. However, only "Windows Vista" is listed on the Hotfix Request page. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows Vista" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.

  • The files that apply to a specific product, SR_Level (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table.

    Version

    Product

    SR_Level

    Service branch

    6.0.600
    2.
    22xxx

    Windows Vista and Windows Server 2008

    SP2

    LDR

  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows Server 2008 and for Windows Vista" section. MUM files and MANIFEST files, and the associated security catalog (.cat) files, are extremely important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.

For all supported x86-based versions of Windows Server 2008 and of Windows Vista

File name

File version

File size

Date

Time

Fxsapi.dll

6.0.6002.22639

227,328

10-May-2011

16:21

Fxscom.dll

6.0.6002.22639

78,336

10-May-2011

16:21

Fxscomex.dll

6.0.6002.22639

473,088

10-May-2011

16:21

Fxsocm.dll

6.0.6002.22639

35,328

10-May-2011

16:21

Fxsresm.dll

6.0.6002.22639

925,184

10-May-2011

14:51

Fxst30.dll

6.0.6002.22639

216,576

10-May-2011

16:21

Fxstiff.dll

6.0.6002.22639

429,056

10-May-2011

16:21

Microsoft-windows-fax-common-ppdlic.xrm-ms

Not applicable

3,118

10-May-2011

16:03

Welcomescan.jpg

Not applicable

709,832

15-Mar-2011

11:04

Winfax.dll

6.0.6002.22639

27,648

10-May-2011

16:25

Fxsapi.dll

6.0.6002.22639

227,328

10-May-2011

16:21

Fxsdrv.dll

0.3.6002.22639

385,536

10-May-2011

16:21

Fxsres.dll

6.0.6002.22639

6,547,968

10-May-2011

16:09

Fxstiff.dll

6.0.6002.22639

429,056

10-May-2011

16:21

Fxsui.dll

6.0.6002.22639

135,680

10-May-2011

16:21

Fxswzrd.dll

6.0.6002.22639

133,120

10-May-2011

16:21

For all supported x64-based versions of Windows Server 2008 and of Windows Vista

File name

File version

File size

Date

Time

Platform

Fxsapi.dll

6.0.6002.22639

622,592

10-May-2011

16:35

x64

Fxscom.dll

6.0.6002.22639

87,552

10-May-2011

16:35

x64

Fxscomex.dll

6.0.6002.22639

591,872

10-May-2011

16:35

x64

Fxsocm.dll

6.0.6002.22639

35,328

10-May-2011

16:35

x64

Fxsresm.dll

6.0.6002.22639

925,184

10-May-2011

15:27

x64

Fxst30.dll

6.0.6002.22639

256,000

10-May-2011

16:35

x64

Fxstiff.dll

6.0.6002.22639

433,152

10-May-2011

16:35

x64

Microsoft-windows-fax-common-ppdlic.xrm-ms

Not applicable

3,118

10-May-2011

16:17

Not applicable

Welcomescan.jpg

Not applicable

709,832

15-Mar-2011

10:34

Not applicable

Winfax.dll

6.0.6002.22639

28,672

10-May-2011

16:38

x64

Fxsapi.dll

6.0.6002.22639

622,592

10-May-2011

16:35

x64

Fxsdrv.dll

0.3.6002.22639

381,440

10-May-2011

16:35

x64

Fxsres.dll

6.0.6002.22639

6,547,968

10-May-2011

16:23

x64

Fxstiff.dll

6.0.6002.22639

433,152

10-May-2011

16:35

x64

Fxsui.dll

6.0.6002.22639

159,744

10-May-2011

16:35

x64

Fxswzrd.dll

6.0.6002.22639

156,672

10-May-2011

16:35

x64

Fxsapi.dll

6.0.6002.22639

227,328

10-May-2011

16:21

x86

Fxscom.dll

6.0.6002.22639

78,336

10-May-2011

16:21

x86

Fxscomex.dll

6.0.6002.22639

473,088

10-May-2011

16:21

x86

Fxsresm.dll

6.0.6002.22639

925,184

10-May-2011

14:51

x86

Winfax.dll

6.0.6002.22639

27,648

10-May-2011

16:25

x86

Workaround

To work around this issue, assign a value to all settings in the Sender Information dialog box.

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

More Information

For more information about the Fax service client API, visit the following Microsoft Developer Network (MSDN) website:

General information about the Fax service client APIFor more information about how to configure the outbox and the outgoing fax transmissions, visit the following Microsoft TechNet website:

General information about how to configure the outbox and outgoing fax transmissionsFor more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Additional file information

Additional file information for Windows Vista and for Windows Server 2008

Additional files for all supported x86-based versions of Windows Vista and of Windows Server 2008

File name

X86_c35ec80bab5c68e6936672c00b1e9a13_31bf3856ad364e35_6.0.6002.22639_none_38b4b6d4a5aace50.manifest

File version

Not applicable

File size

698

Date (UTC)

10-May-2011

Time (UTC)

21:14

File name

X86_microsoft-windows-fax-common_31bf3856ad364e35_6.0.6002.22639_none_0e5d5fa266f49da3.manifest

File version

Not applicable

File size

271,190

Date (UTC)

10-May-2011

Time (UTC)

17:57

File name

X86_prnms002.inf_31bf3856ad364e35_6.0.6002.22639_none_549f1722d115df3b.manifest

File version

Not applicable

File size

5,351

Date (UTC)

10-May-2011

Time (UTC)

21:14

Additional files for all supported x64-based versions of Windows Vista and of Windows Server 2008

File name

Amd64_5556659994047cae19d6cf3e13f2ce96_31bf3856ad364e35_6.0.6002.22639_none_08fcb4a1b2423eb4.manifest

File version

Not applicable

File size

1,046

Date (UTC)

10-May-2011

Time (UTC)

21:13

File name

Amd64_microsoft-windows-fax-common_31bf3856ad364e35_6.0.6002.22639_none_6a7bfb261f520ed9.manifest

File version

Not applicable

File size

271,231

Date (UTC)

10-May-2011

Time (UTC)

18:08

File name

Amd64_prnms002.inf_31bf3856ad364e35_6.0.6002.22639_none_b0bdb2a689735071.manifest

File version

Not applicable

File size

5,365

Date (UTC)

10-May-2011

Time (UTC)

21:14

File name

Wow64_microsoft-windows-fax-common_31bf3856ad364e35_6.0.6002.22639_none_74d0a57853b2d0d4.manifest

File version

Not applicable

File size

273,060

Date (UTC)

10-May-2011

Time (UTC)

17:53

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