Please follow the instruction here, though it talks about visual studio 2010 it should help you to analyze the problem. it may be solved with the steps described there and if not, please let me know...
In the Options.Keyboard page, please select "Debug.StepOver" from the command listbox, and then put focus to the "Press shortcut keys" textbox and press F10, click Assign button to re-assign shortcut, does it work?
在Options.Keyboard页面中,请从命令列表框中选择“Debug.StepOver”,然后将焦点置于“按快捷键”文本框并按F10,单击“分配”按钮重新分配快捷方式,是否有效?
You can also try to run Visual Studio under safe mode, which will prevents all third-party VSPackages from loading when Visual Studio starts; if the issue disappear under safe mode, you may consider checking your installed add-ons or VSPackages.
您还可以尝试在安全模式下运行Visual Studio,这将阻止在Visual Studio启动时加载所有第三方VSPackage;如果问题在安全模式下消失,您可以考虑检查已安装的附加组件或VSPackage。
Second, to log all activity of Visual Studio to a log file for further troubleshooting, please use the /Log switch, and post the log file content here, so we can do more investigation on it.
其次,要将Visual Studio的所有活动记录到日志文件中以进行进一步的故障排除,请使用/ Log开关,并在此处发布日志文件内容,以便我们对其进行更多调查。
If this feature works well before, and suddenly behave abnormally, it usually indicate that some files or configurations of Visual Studio installation is corrupted or missed, you can:
如果此功能之前运行良好,并且突然表现异常,则通常表示某些文件或Visual Studio安装配置已损坏或丢失,您可以:
Restores Visual Studio default settings by using "Devenv.exe /ResetSettings" command. Please backup your settings before restore to default settings.
使用“Devenv.exe / ResetSettings”命令恢复Visual Studio默认设置。请在恢复到默认设置之前备份您的设置。
Repair/reinstall Visual Studio;
修复/重新安装Visual Studio;
To repair Visual Studio In the Add or Remove Programs dialog box, select Visual Studio then click Change/Remove.
修复Visual Studio在“添加或删除程序”对话框中,选择“Visual Studio”,然后单击“更改/删除”。