最近不知道怎么，想使用VS2015查看代码，但是打开VS2015的时候却提醒VS2015软件不完整？我记得自己没有动过VS2015呀！按照以往的经验，自己试了以下方法：
一、在控制面板的卸载程序中，点击VS2015的“修复”选项，但是安装到一半就会出现以下问题：
我又查看了软件Log，最后关于Team Explorer出现以下日志：
[18F0:1960][2017-12-23T22:19:47]i301: Applying execute package: vs_teamExplorerCore, action: Install, path: C:\ProgramData\Package Cache\{791295AE-3B0A-3222-9E69-26C8C106E8D1}v14.0.23102\packages\TeamExplorer\Core\vs_teamExplorerCore.msi, arguments: ' MSIFASTINSTALL="7" USING_EXUIH="1"'
[05AC:1A7C][2017-12-23T22:20:02]i000: MUX: ExecuteError: Package (vs_teamExplorerCore) failed: Error Message Id: 1722 ErrorMessage: There is a problem with this Windows Installer package. A program run as part of the setup did not finish as expected. Contact your support personnel or package vendor.
[18F0:1960][2017-12-23T22:20:05]e000: Error 0x80070643: Failed to install MSI package.
[18F0:1960][2017-12-23T22:20:05]e000: Error 0x80070643: Failed to execute MSI package.
[05AC:1A7C][2017-12-23T22:20:05]e000: Error 0x80070643: Failed to configure per-machine MSI package.
[05AC:1A7C][2017-12-23T22:20:05]i000: MUX: Installation size in bytes for package: vs_teamExplorerCore MaxAppDrive: 171569152 MaxSysDrive: 28168192 AppDrive: 4096 SysDrive: 23842816
[05AC:1A7C][2017-12-23T22:20:05]i000: MUX: Return Code:0x80070643 Msi Messages:There is a problem with this Windows Installer package. A program run as part of the setup did not finish as expected. Contact your support personnel or package vendor. Result Detail:0 Restart:None
[05AC:1A7C][2017-12-23T22:20:05]i000: MUX: Set Result: Return Code=-2147023293 (0x80070643), Error Message=There is a problem with this Windows Installer package. A program run as part of the setup did not finish as expected. Contact your support personnel or package vendor. , Result Detail=, Vital=True, Package Action=Install, Package Id=vs_teamExplorerCore
[05AC:1A7C][2017-12-23T22:20:05]i000: Setting string variable 'BundleResult' to value '1603'
[05AC:1A7C][2017-12-23T22:20:05]i319: Applied execute package: vs_teamExplorerCore, result: 0x80070643, restart: None
[05AC:1A7C][2017-12-23T22:20:05]e000: Error 0x80070643: Failed to execute MSI package.
[05AC:1A7C][2017-12-23T22:20:05]i000: MUX: ExecutePackageBegin PackageId: vs_teamExplorerCore
[18F0:1960][2017-12-23T22:20:05]i318: Skipped rollback of package: vs_teamExplorerCore, action: Uninstall, already: Absent
[05AC:1A7C][2017-12-23T22:20:05]i000: MUX: Installation size in bytes for package: vs_teamExplorerCore MaxAppDrive: 0 MaxSysDrive: 0 AppDrive: 0 SysDrive: 0
[05AC:1A7C][2017-12-23T22:20:05]i000: MUX: Return Code:0x0 Msi Messages:There is a problem with this Windows Installer package. A program run as part of the setup did not finish as expected. Contact your support personnel or package vendor. Result Detail:0 Restart:None
[05AC:1A7C][2017-12-23T22:20:05]i000: MUX: Reset execution Result
[05AC:1A7C][2017-12-23T22:20:05]i000: MUX: Reset Result
[05AC:1A7C][2017-12-23T22:20:05]i000: Setting string variable 'BundleResult' to value '1603'
[05AC:1A7C][2017-12-23T22:20:05]i319: Applied rollback package: vs_teamExplorerCore, result: 0x0, restart: None
[18F0:1960][2017-12-23T22:20:05]i351: Removing cached package: vs_teamExplorerCore, from path: C:\ProgramData\Package Cache\{791295AE-3B0A-3222-9E69-26C8C106E8D1}v14.0.23102\
[18F0:1960][2017-12-23T22:20:05]i372: Session end, registration key: SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{1a4d4608-a36d-4dc7-accd-206e23253076}, resume: ARP, restart: None, disable resume: No
[18F0:1960][2017-12-23T22:20:05]i371: Updating session, registration key: SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{1a4d4608-a36d-4dc7-accd-206e23253076}, resume: ARP, restart initiated: No, disable resume: No
[05AC:1A7C][2017-12-23T22:20:05]i000: MUX: Apply Complete: Disk Space Used in bytes for Installation: MaxAppDrive: 410365952 MaxSysDrive: 1165197312 AppDrive: 0 SysDrive: 630546432
[05AC:1A7C][2017-12-23T22:20:05]i000: MUX: Free Disk Space after install: SystemDrive C:\ 57547517952 bytes AppDrive D:\ 47390670848 bytes
[05AC:1A7C][2017-12-23T22:20:05]i000: MUX: Go to Finished page.
[05AC:1A7C][2017-12-23T22:20:06]i000: MUX: Watson Bucketting Parameters
[05AC:1A7C][2017-12-23T22:20:06]i000: MUX: P1 - vs_enterprise
[05AC:1A7C][2017-12-23T22:20:06]i000: MUX: P2 - 14.0.23107.178
[05AC:1A7C][2017-12-23T22:20:06]i000: MUX: P3 - 14.0.23107
[05AC:1A7C][2017-12-23T22:20:06]i000: MUX: P4 - Repair
[05AC:1A7C][2017-12-23T22:20:06]i000: MUX: P5 - vs_teamExplorerCore
[05AC:1A7C][2017-12-23T22:20:06]i000: MUX: P6 - Install
[05AC:1A7C][2017-12-23T22:20:06]i000: MUX: P7 - 0x80070643
[05AC:1A7C][2017-12-23T22:20:06]i000: MUX: P8 - There is a problem with this Windows Installer package. A program run as part of the setup did not finish as expected. Contact your support personnel or package vendor.
[05AC:1A7C][2017-12-23T22:20:06]i000: MUX: P9 -
[05AC:1A7C][2017-12-23T22:20:06]i399: Apply complete, result: 0x80070643, restart: None, ba requested restart: No
二、难道真的是安装包有问题？
把VS2015又卸载之后，重新解压了新的VS2015 ISO文件安装，但是依旧出现以上问题。
三、百度/谷歌了许多资料，又有资料说以前的没有卸载干净，我使用官方提供的程序加上自己手动完全卸载之后，依旧会出现以上问题。
其中在谷歌上又有一下解决方案：
我照着上面的步骤一步步完成，但是依旧出现以上问题。
四、有人建议重装系统，但自己实在不想重装。重装之后我那些开发软件又要重新安装，太麻烦了。
五、仔细查看了一下Log发现关于Team Explorer的有一个文件夹：C:\ProgramData\Package Cache（此为隐藏文件），我百度了了一下，说是要修改某个文件文件名的后缀，但自己也想不了那么多了，把整个文件夹都清空了。最后完美解决。如下图：
这个问题困扰了我三天了。终于找到了解决办法。写此博客来记录。