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 this specific problem.
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, submit a request to 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: 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 have
April 2014 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 (2919355) installed in Windows 8.1 or Windows Server 2012 R2.
Registry information
To use the hotfix in this package, you do not have to make any changes to the registry.
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 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 8.1 and Windows Server 2012 R2 file information and notes
Important Windows 8.1 hotfixes and Windows Server 2012 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 8.1/Windows Server 2012 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 MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are not listed.
For all supported x86-based versions of Windows 8.1
| File name | File version | File size | Date | Time | Platform |
|---|
| Wuapi.dll | 7.9.9600.17661 | 723,968 | 16-Jan-2015 | 00:56 | x86 |
| Wudriver.dll | 7.9.9600.17661 | 81,920 | 16-Jan-2015 | 00:57 | x86 |
| Wups.dll | 7.9.9600.17404 | 25,600 | 18-Oct-2014 | 07:25 | x86 |
| Windowsupdate.adml | Not applicable | 36,377 | 22-Aug-2013 | 11:28 | Not applicable |
| Windowsupdate.adml | Not applicable | 35,351 | 22-Aug-2013 | 11:11 | Not applicable |
| Windowsupdate.adml | Not applicable | 37,655 | 22-Aug-2013 | 11:30 | Not applicable |
| Windowsupdate.adml | Not applicable | 63,777 | 22-Aug-2013 | 11:18 | Not applicable |
| Windowsupdate.adml | Not applicable | 32,480 | 22-Aug-2013 | 05:13 | Not applicable |
| Windowsupdate.adml | Not applicable | 37,825 | 22-Aug-2013 | 11:31 | Not applicable |
| Windowsupdate.adml | Not applicable | 36,828 | 22-Aug-2013 | 11:25 | Not applicable |
| Windowsupdate.adml | Not applicable | 40,592 | 22-Aug-2013 | 11:27 | Not applicable |
| Windowsupdate.adml | Not applicable | 39,373 | 22-Aug-2013 | 11:30 | Not applicable |
| Windowsupdate.adml | Not applicable | 38,055 | 22-Aug-2013 | 11:34 | Not applicable |
| Windowsupdate.adml | Not applicable | 42,878 | 22-Aug-2013 | 11:35 | Not applicable |
| Windowsupdate.adml | Not applicable | 37,699 | 22-Aug-2013 | 11:34 | Not applicable |
| Windowsupdate.adml | Not applicable | 34,261 | 22-Aug-2013 | 11:27 | Not applicable |
| Windowsupdate.adml | Not applicable | 36,005 | 22-Aug-2013 | 11:29 | Not applicable |
| Windowsupdate.adml | Not applicable | 38,996 | 22-Aug-2013 | 11:29 | Not applicable |
| Windowsupdate.adml | Not applicable | 38,092 | 22-Aug-2013 | 11:30 | Not applicable |
| Windowsupdate.adml | Not applicable | 38,015 | 22-Aug-2013 | 11:27 | Not applicable |
| Windowsupdate.adml | Not applicable | 59,379 | 22-Aug-2013 | 11:27 | Not applicable |
| Windowsupdate.adml | Not applicable | 34,643 | 22-Aug-2013 | 11:28 | Not applicable |
| Windowsupdate.adml | Not applicable | 37,004 | 22-Aug-2013 | 11:32 | Not applicable |
| Windowsupdate.adml | Not applicable | 29,261 | 22-Aug-2013 | 11:24 | Not applicable |
| Windowsupdate.adml | Not applicable | 29,587 | 22-Aug-2013 | 11:22 | Not applicable |
| Windowsupdate.adml | Not applicable | 29,587 | 22-Aug-2013 | 11:22 | Not applicable |
| Wuapp.exe | 7.9.9600.17661 | 29,696 | 16-Jan-2015 | 00:59 | x86 |
| Wuwebv.dll | 7.9.9600.17661 | 124,928 | 16-Jan-2015 | 00:59 | x86 |
| Windowsupdateclient-core.ptxml | Not applicable | 11,791 | 21-Aug-2013 | 23:40 | Not applicable |
| Wuauclt.exe | 7.9.9600.17661 | 48,504 | 20-Jan-2015 | 06:07 | x86 |
| Wuaueng.dll | 7.9.9600.17663 | 2,947,584 | 19-Jan-2015 | 23:39 | x86 |
| Wups2.dll | 7.9.9600.17404 | 23,552 | 18-Oct-2014 | 07:25 | x86 |
| Windowsupdate.admx | Not applicable | 23,690 | 01-Jul-2013 | 16:49 | Not applicable |
| Wuaext.dll | 7.9.9600.17404 | 14,848 | 18-Oct-2014 | 06:29 | x86 |
| Wucltux.dll | 7.9.9600.17661 | 1,653,248 | 16-Jan-2015 | 00:54 | x86 |
| Wusettingsprovider.dll | 7.9.9600.17661 | 332,800 | 16-Jan-2015 | 00:57 | x86 |
For all supported x64-based versions of Windows 8.1 and of Windows Server 2012 R2
| File name | File version | File size | Date | Time | Platform |
|---|
| Wuapi.dll | 7.9.9600.17661 | 894,976 | 16-Jan-2015 | 01:04 | x64 |
| Wudriver.dll | 7.9.9600.17661 | 95,744 | 16-Jan-2015 | 01:05 | x64 |
| Wups.dll | 7.9.9600.17404 | 60,416 | 18-Oct-2014 | 08:09 | x64 |
| Windowsupdate.adml | Not applicable | 36,377 | 22-Aug-2013 | 19:21 | Not applicable |
| Windowsupdate.adml | Not applicable | 35,351 | 22-Aug-2013 | 19:14 | Not applicable |
| Windowsupdate.adml | Not applicable | 37,655 | 22-Aug-2013 | 19:33 | Not applicable |
| Windowsupdate.adml | Not applicable | 63,777 | 22-Aug-2013 | 19:19 | Not applicable |
| Windowsupdate.adml | Not applicable | 32,480 | 22-Aug-2013 | 12:28 | Not applicable |
| Windowsupdate.adml | Not applicable | 37,825 | 22-Aug-2013 | 19:35 | Not applicable |
| Windowsupdate.adml | Not applicable | 36,828 | 22-Aug-2013 | 19:23 | Not applicable |
| Windowsupdate.adml | Not applicable | 40,592 | 22-Aug-2013 | 19:21 | Not applicable |
| Windowsupdate.adml | Not applicable | 39,373 | 22-Aug-2013 | 19:33 | Not applicable |
| Windowsupdate.adml | Not applicable | 38,055 | 22-Aug-2013 | 19:23 | Not applicable |
| Windowsupdate.adml | Not applicable | 42,878 | 22-Aug-2013 | 19:23 | Not applicable |
| Windowsupdate.adml | Not applicable | 37,699 | 22-Aug-2013 | 19:22 | Not applicable |
| Windowsupdate.adml | Not applicable | 34,261 | 22-Aug-2013 | 19:19 | Not applicable |
| Windowsupdate.adml | Not applicable | 36,005 | 22-Aug-2013 | 19:19 | Not applicable |
| Windowsupdate.adml | Not applicable | 38,996 | 22-Aug-2013 | 19:19 | Not applicable |
| Windowsupdate.adml | Not applicable | 38,092 | 22-Aug-2013 | 19:19 | Not applicable |
| Windowsupdate.adml | Not applicable | 38,015 | 22-Aug-2013 | 19:27 | Not applicable |
| Windowsupdate.adml | Not applicable | 59,379 | 22-Aug-2013 | 19:27 | Not applicable |
| Windowsupdate.adml | Not applicable | 34,643 | 22-Aug-2013 | 19:27 | Not applicable |
| Windowsupdate.adml | Not applicable | 37,004 | 22-Aug-2013 | 19:21 | Not applicable |
| Windowsupdate.adml | Not applicable | 29,261 | 22-Aug-2013 | 19:10 | Not applicable |
| Windowsupdate.adml | Not applicable | 29,587 | 22-Aug-2013 | 19:08 | Not applicable |
| Windowsupdate.adml | Not applicable | 29,587 | 22-Aug-2013 | 19:08 | Not applicable |
| Wuapp.exe | 7.9.9600.17661 | 35,840 | 16-Jan-2015 | 01:09 | x64 |
| Wuwebv.dll | 7.9.9600.17661 | 140,288 | 16-Jan-2015 | 01:09 | x64 |
| Windowsupdateclient-core.ptxml | Not applicable | 11,791 | 22-Aug-2013 | 06:45 | Not applicable |
| Wuauclt.exe | 7.9.9600.17661 | 55,776 | 20-Jan-2015 | 06:13 | x64 |
| Wuaueng.dll | 7.9.9600.17663 | 3,558,912 | 19-Jan-2015 | 23:54 | x64 |
| Wups2.dll | 7.9.9600.17404 | 51,712 | 18-Oct-2014 | 08:09 | x64 |
| Windowsupdate.admx | Not applicable | 23,690 | 01-Jul-2013 | 16:49 | Not applicable |
| Wuaext.dll | 7.9.9600.17404 | 17,408 | 18-Oct-2014 | 06:50 | x64 |
| Wucltux.dll | 7.9.9600.17661 | 1,714,176 | 16-Jan-2015 | 01:03 | x64 |
| Wusettingsprovider.dll | 7.9.9600.17661 | 407,552 | 16-Jan-2015 | 01:06 | x64 |
| Wuapi.dll | 7.9.9600.17661 | 723,968 | 16-Jan-2015 | 00:56 | x86 |
| Wudriver.dll | 7.9.9600.17661 | 81,920 | 16-Jan-2015 | 00:57 | x86 |
| Wups.dll | 7.9.9600.17404 | 25,600 | 18-Oct-2014 | 07:25 | x86 |
| Wuapp.exe | 7.9.9600.17661 | 29,696 | 16-Jan-2015 | 00:59 | x86 |
| Wuwebv.dll | 7.9.9600.17661 | 124,928 | 16-Jan-2015 | 00:59 | x86 |
For all supported Windows 8.1
| File name | File version | File size | Date | Time | Platform |
|---|
| Wuapi.dll | 7.9.9600.17661 | 679,936 | 16-Jan-2015 | 00:43 | Not applicable |
| Wudriver.dll | 7.9.9600.17661 | 78,848 | 16-Jan-2015 | 00:44 | Not applicable |
| Wups.dll | 7.9.9600.17238 | 26,112 | 24-Jul-2014 | 09:33 | Not applicable |
| Windowsupdate.adml | Not applicable | 36,377 | 22-Aug-2013 | 12:20 | Not applicable |
| Windowsupdate.adml | Not applicable | 35,351 | 22-Aug-2013 | 12:12 | Not applicable |
| Windowsupdate.adml | Not applicable | 37,655 | 22-Aug-2013 | 12:15 | Not applicable |
| Windowsupdate.adml | Not applicable | 63,777 | 22-Aug-2013 | 12:23 | Not applicable |
| Windowsupdate.adml | Not applicable | 32,480 | 22-Aug-2013 | 03:44 | Not applicable |
| Windowsupdate.adml | Not applicable | 37,825 | 22-Aug-2013 | 12:15 | Not applicable |
| Windowsupdate.adml | Not applicable | 36,828 | 22-Aug-2013 | 12:20 | Not applicable |
| Windowsupdate.adml | Not applicable | 40,592 | 22-Aug-2013 | 12:20 | Not applicable |
| Windowsupdate.adml | Not applicable | 39,373 | 22-Aug-2013 | 12:15 | Not applicable |
| Windowsupdate.adml | Not applicable | 38,055 | 22-Aug-2013 | 12:24 | Not applicable |
| Windowsupdate.adml | Not applicable | 42,878 | 22-Aug-2013 | 12:24 | Not applicable |
| Windowsupdate.adml | Not applicable | 37,699 | 22-Aug-2013 | 12:24 | Not applicable |
| Windowsupdate.adml | Not applicable | 34,261 | 22-Aug-2013 | 12:18 | Not applicable |
| Windowsupdate.adml | Not applicable | 36,005 | 22-Aug-2013 | 12:13 | Not applicable |
| Windowsupdate.adml | Not applicable | 38,996 | 22-Aug-2013 | 12:14 | Not applicable |
| Windowsupdate.adml | Not applicable | 38,092 | 22-Aug-2013 | 12:13 | Not applicable |
| Windowsupdate.adml | Not applicable | 38,015 | 22-Aug-2013 | 12:23 | Not applicable |
| Windowsupdate.adml | Not applicable | 59,379 | 22-Aug-2013 | 12:23 | Not applicable |
| Windowsupdate.adml | Not applicable | 34,643 | 22-Aug-2013 | 12:23 | Not applicable |
| Windowsupdate.adml | Not applicable | 37,004 | 22-Aug-2013 | 12:18 | Not applicable |
| Windowsupdate.adml | Not applicable | 29,261 | 22-Aug-2013 | 12:25 | Not applicable |
| Windowsupdate.adml | Not applicable | 29,587 | 22-Aug-2013 | 12:26 | Not applicable |
| Windowsupdate.adml | Not applicable | 29,587 | 22-Aug-2013 | 12:25 | Not applicable |
| Wuapp.exe | 7.9.9600.17661 | 29,184 | 16-Jan-2015 | 00:46 | Not applicable |
| Wuwebv.dll | 7.9.9600.17661 | 117,760 | 16-Jan-2015 | 00:46 | Not applicable |
| Windowsupdateclient-core.ptxml | Not applicable | 11,791 | 21-Aug-2013 | 23:34 | Not applicable |
| Wuauclt.exe | 7.9.9600.17661 | 46,992 | 20-Jan-2015 | 06:02 | Not applicable |
| Wuaueng.dll | 7.9.9600.17663 | 2,599,936 | 19-Jan-2015 | 23:33 | Not applicable |
| Wups2.dll | 7.9.9600.17404 | 22,528 | 18-Oct-2014 | 07:12 | Not applicable |
| Windowsupdate.admx | Not applicable | 23,690 | 01-Jul-2013 | 16:49 | Not applicable |
| Wuaext.dll | 7.9.9600.16384 | 15,872 | 22-Aug-2013 | 02:14 | Not applicable |
| Wucltux.dll | 7.9.9600.17661 | 1,603,072 | 16-Jan-2015 | 00:42 | Not applicable |
| Wusettingsprovider.dll | 7.9.9600.17661 | 305,664 | 16-Jan-2015 | 00:44 | Not applicable |