You have a computer that is running a 64-bit version of Windows 7 or of Windows Server 2008 R2.
You try to open the Add Printer wizard by using the 32-bit Printui.exe that is located in the %windir%\SysWOW64 folder or by using the rundll32 printui.dll,PrintUIEntry command on the computer.
In this scenario, you receive the following error message:
Windows can't open Add Printer. Operation could not be completed (error 0x0000007e).
Additionally, the computer may stop responding if you use the rundll32 printui.dll,PrintUIEntry command together with the/o, /p, /s, or /e switch.
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 Web site:
Note 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 7
Windows 7 Service Pack 1 (SP1)
Windows Server 2008 R2
Windows Server 2008 R2 Service Pack 1 (SP1)
For more information about how to obtain a Windows 7 or a Windows Server 2008 R2 service pack, click the following article number to view the article in the Microsoft Knowledge Base:
Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2
Restart requirement
You may have to restart the computer after you apply this hotfix.
Hotfix replacement information
This hotfix does not replace a previously released hotfix.
File information
The English (United States) 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 7 and Windows Server 2008 R2 file information notes
Important Windows 7 hotfixes and Windows Server 2008 R2 hotfixes are included in the same packages. However, hotfixes on the Hotfix Request page are listed under both operating systems. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 7/Windows Server 2008 R2" 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.
Collapse this tableExpand this table
Version
Product
SR_Level
Service branch
6.1.760
0
.
20xxx
Windows 7 and Windows Server 2008 R2
RTM
LDR
6.1.760
1
.
21xxx
Windows 7 and Windows Server 2008 R2
SP1
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 R2 and for Windows 7" section. MUM 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 x64-based versions of Windows 7 and of Windows Server 2008 R2
Collapse this tableExpand this table
File name
File version
File size
Date
Time
Platform
Tcpmib.dll
6.1.7600.20926
38,912
17-Mar-2011
05:17
x64
Tcpmib.dll
6.1.7601.21685
38,912
17-Mar-2011
05:05
x64
Tcpmonui.dll
6.1.7600.20926
73,216
17-Mar-2011
05:17
x64
Tcpmonui.dll
6.1.7601.21685
73,216
17-Mar-2011
05:05
x64
Winspool.drv
6.1.7600.20926
441,856
17-Mar-2011
05:11
Not Applicable
Winspool.drv
6.1.7601.21685
442,368
17-Mar-2011
04:59
Not Applicable
Tcpmib.dll
6.1.7600.20926
31,232
17-Mar-2011
06:51
x86
Tcpmib.dll
6.1.7601.21685
31,232
17-Mar-2011
06:51
x86
Tcpmonui.dll
6.1.7600.20926
61,440
17-Mar-2011
06:51
x86
Tcpmonui.dll
6.1.7601.21685
61,440
17-Mar-2011
06:51
x86
Winspool.drv
6.1.7600.20926
319,488
17-Mar-2011
06:49
Not Applicable
Winspool.drv
6.1.7601.21685
320,000
17-Mar-2011
06:49
Not Applicable
For all supported IA-64-based versions of Windows Server 2008 R2
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