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This August 2017 Update for Windows 8.1 and Windows Server 2012 R2 fixes an issue in the .NET Framework 4.6, 4.6.1, 4.6.2, and 4.7. We recommend that you apply this update as part of your regular maintenance routines. Before you install this update, see the "Prerequisites" and "Restart requirement" sections.
Common Language Runtime (CLR)
Applications that run on the .NET Framework do not respect the settings that are specified in the registry for AppContext switches. Regardless of the registry option setting for an AppContext flag, the application behaves as if the value specified is set to "false."
This update is available by manual download only.
To get the stand-alone package for this update, go to the Microsoft Update Catalog website.
To apply this update, you must have the .NET Framework 4.6, 4.6.1, 4.6.2, or 4.7 installed.
You must restart the computer after you apply this update if any affected files are being used. We recommend that you exit all .NET Framework-based applications before you apply this update.
The English (United States) version of this update installs files that have the attributes that are listed in the following tables. The dates and times for these files are listed in Coordinated Universal Time (UTC). The dates and 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 times may change when you perform certain operations on the files.
For all x86-based systems
| File name | File version | File size | Date | Time |
|---|---|---|---|---|
| mscorlib.dll | 4.7.2110.0 | 5,614,240 | 29-Jul-2017 | 02:29 |
| normidna.nlp | 59,342 | 15-Jun-2017 | 05:28 | |
| normnfc.nlp | 47,076 | 15-Jun-2017 | 05:28 | |
| normnfd.nlp | 40,566 | 15-Jun-2017 | 05:28 | |
| normnfkc.nlp | 67,808 | 15-Jun-2017 | 05:28 | |
| normnfkd.nlp | 61,718 | 15-Jun-2017 | 05:28 | |
| clrjit.dll | 4.7.2110.0 | 522,904 | 29-Jul-2017 | 02:29 |
| clr.dll | 4.7.2110.0 | 7,221,904 | 29-Jul-2017 | 02:29 |
| mscordacwks.dll | 4.7.2110.0 | 1,341,104 | 29-Jul-2017 | 02:29 |
| mscordbi.dll | 4.7.2110.0 | 1,164,960 | 29-Jul-2017 | 02:29 |
| mscorlib.ni.dll | 4.7.2110.0 | 20,518,048 | 29-Jul-2017 | 02:29 |
| msvcp120_clr0400.dll | 12.0.52519.0 | 485,576 | 28-Jul-2017 | 23:45 |
| msvcr120_clr0400.dll | 12.0.52519.0 | 987,840 | 28-Jul-2017 | 23:45 |
| peverify.dll | 4.7.2110.0 | 188,576 | 29-Jul-2017 | 02:29 |
| sos.dll | 4.7.2110.0 | 743,568 | 29-Jul-2017 | 02:29 |
For all x64-based systems
| File name | File version | File size | Date | Time |
|---|---|---|---|---|
| mscorlib.dll | 4.7.2110.0 | 5,401,760 | 29-Jul-2017 | 02:22 |
| normidna.nlp | 59,342 | 15-Jun-2017 | 05:28 | |
| normnfc.nlp | 47,076 | 15-Jun-2017 | 05:28 | |
| normnfd.nlp | 40,566 | 15-Jun-2017 | 05:28 | |
| normnfkc.nlp | 67,808 | 15-Jun-2017 | 05:28 | |
| normnfkd.nlp | 61,718 | 15-Jun-2017 | 05:28 | |
| clrjit.dll | 4.7.2110.0 | 1,129,112 | 29-Jul-2017 | 02:22 |
| clr.dll | 4.7.2110.0 | 10,326,160 | 29-Jul-2017 | 02:22 |
| compatjit.dll | 4.7.2110.0 | 1,259,688 | 29-Jul-2017 | 02:22 |
| mscordacwks.dll | 4.7.2110.0 | 1,838,256 | 29-Jul-2017 | 02:22 |
| mscordbi.dll | 4.7.2110.0 | 1,618,592 | 29-Jul-2017 | 02:22 |
| mscorlib.ni.dll | 4.7.2110.0 | 22,551,712 | 29-Jul-2017 | 02:29 |
| msvcp120_clr0400.dll | 12.0.52519.0 | 690,008 | 28-Jul-2017 | 23:45 |
| msvcr120_clr0400.dll | 12.0.52519.0 | 993,632 | 28-Jul-2017 | 23:45 |
| peverify.dll | 4.7.2110.0 | 260,256 | 29-Jul-2017 | 02:22 |
| sos.dll | 4.7.2110.0 | 872,080 | 29-Jul-2017 | 02:22 |
| mscorlib.dll | 4.7.2110.0 | 5,614,240 | 29-Jul-2017 | 02:29 |
| normidna.nlp | 59,342 | 15-Jun-2017 | 05:28 | |
| normnfc.nlp | 47,076 | 15-Jun-2017 | 05:28 | |
| normnfd.nlp | 40,566 | 15-Jun-2017 | 05:28 | |
| normnfkc.nlp | 67,808 | 15-Jun-2017 | 05:28 | |
| normnfkd.nlp | 61,718 | 15-Jun-2017 | 05:28 | |
| clrjit.dll | 4.7.2110.0 | 522,904 | 29-Jul-2017 | 02:29 |
| clr.dll | 4.7.2110.0 | 7,221,904 | 29-Jul-2017 | 02:29 |
| mscordacwks.dll | 4.7.2110.0 | 1,341,104 | 29-Jul-2017 | 02:29 |
| mscordbi.dll | 4.7.2110.0 | 1,164,960 | 29-Jul-2017 | 02:29 |
| mscorlib.ni.dll | 4.7.2110.0 | 20,518,048 | 29-Jul-2017 | 02:29 |
| msvcp120_clr0400.dll | 12.0.52519.0 | 485,576 | 28-Jul-2017 | 23:45 |
| msvcr120_clr0400.dll | 12.0.52519.0 | 987,840 | 28-Jul-2017 | 23:45 |
| peverify.dll | 4.7.2110.0 | 188,576 | 29-Jul-2017 | 02:29 |
| sos.dll | 4.7.2110.0 | 743,568 | 29-Jul-2017 | 02:29 |
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