regsvr32 returned exit code 5 (and 4)

[Techie42]

Two of the files that I am attempting to self reg show up in the log with

wrn, error unregistering <path>\filename1.dll - regsvr32 returned exit code 5
wrn, error unregistering <path>\filename2.dll - regsvr32 returned exit code 4

I looked these up in WinError.h as

// The system cannot open the file.
#define ERROR_TOO_MANY_OPEN_FILES 4L

// Access is denied.
#define ERROR_ACCESS_DENIED 5L

However both of these files look fine in dependency walker and, they register and unregester fine with I run regsrv32 on them myself.

[RobertDickau]

(Duplicate post; follow-up here.)

[Gooseherd]

I solved the problem by entering de registry (regedit) and deleted everything with "InstallShield". It's a lot and it will take some time. After that I deleted everything what is possible in "C:\Program Files\Common Files\InstallShield". Then I restarted the computer and delete the rest of "C:\Program Files\Common Files\InstallShield. It works! At last I used CCleaner to clean the registry.