When we uninstall ZW3D and want to install the new version, but sometimes for some unknown reason, we cannot re-install ZW3D successfully.  You can try to delete the file relate to ZW3D in registry.

 

For ZW3D 64bit version

1)      Push the windown key + R key, then input “regedit” to launch registry editor .


2)       Go to directory “HKEY_LOCAL_MACHINE\SOFTWARE\ZWSOFT\ZW3D\2020\ZW3D2020”, And find the file name as “Guid” and “Guid1”, and then copy the value of “Guid” and “Guid1”.

Note: ”2020” here is the year version of zw3d, “EN” is the language version, please find the right directory corresponding to the installed version of ZW3D

3)       Go to the directory “HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall”, and Search with the value of “Guid” and “Guid1”, and delete the file corresponding to them.

4)       Go to directory “HKEY_LOCAL_MACHINE\SOFTWARE\ZWSOFT\ZW3D\2020\ZW3D2020”, delete the whole folder.

5)       Try to re-install ZW3D, if it still cannot to be re-install, Go to next Step.

6)       Go to directory “HKEY_CLASSES_ROOT\Installer\Products”, Search with “ZW3D2020”, and delete the corresponding folder as below:


For ZW3D 32bit version install in 64bit OS

The directory of step 1) will change to “HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\ZWSOFT\ZW3D\2016\En”, the other Step is the same as For ZW3D 64bit does.

 

For ZW3D 32bit version install in 32ibt OS

The Step is the same as For ZW3D 64bit does.