6. SOLIDWORKS Desktop - the source folder version is not correct D:\ (or E:\)

Issue:

During installation or modification, you may have encountered this message:

Figure 1 : Error "the source folder version is not correct D:\".

If you're installing from a set of installation files copied from a DVD or USB stick, or downloaded from websites, this error means exactly what it says: the swdata99.id file is missing.

Solution: 

- The SOLIDWORKS installation file may have been deleted: restore it from your recycle bin or re-download it from this link.

Then double-click on the restored .iso file and restart the installation normally.

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