Description

(Windows only) If an earlier version of Application Server was installed using special characters or DOS-style short names in the program directory path, subsequent in-place upgrades to Application Server 9.1 will fail if those same directory path names are used.

For example, if Application Server 8.2 was installed in either:

C:\Program Files (x86)\dirs\appserver
c:\progra~2\dirs\appserver

Attempts to perform an in-place upgrade to 9.1 will fail because the installer cannot convert the short names or special characters to the required long name format.