the installer has encountered an unexpected error installing this package

the installer has encountered an unexpected error installing this package. this may indicate a problem with this package

Error message
We usually install some msi type Software （ for example ：SVN,GIT,Mysql）
You will encounter some errors as follows ：

Problem analysis
The reason for the error is that it has been updated windows The system may be reinstalled WIN10 Then the serial number of the disc was disordered , Install first TorttoiseGit Then I changed the serial number of the drive letter , The previous cannot be used , Then delete the previous TortoiseGit. There is no way to delete it directly , Because the installation location cannot be found after the drive letter is changed .
Solution
cmd The window administrator enters –》 Input msiexec /package + The absolute path where the installer is located ,

Such as ： msiexec /package F:\DownLoad\TortoiseSVN_1.9.4.27285_x64.msi

Direct execution statement , Then the installation interface will pop up , Just install it normally ！！！

notes ： The installed file package needs to be placed in the specified directory .