Unknown is not a valid Win32 application

Last update: 4 August 2017

Unknown is not a valid Win32 application

Summary

After double-clicking a content object you may receive this warning message in the eventviewer:

Event Type:     Warning
Event Source:   Fabasoft Tool Manager
Event Category: Internal 
Event ID:       0
Date:           
Time:           
User:           N/A
Computer:       
Description:
Could not start command '"\fsc.client\dav\contentobject.zip"'
Error:  is not a valid Win32 application.  (0x000000C1/193)
User: 
Process: 2776 (0x00000AD8) [IEXPLORE]
Thread: 2500 (0x000009C4)
Version: 9.1.3.20
System: Win2k3 5.02 Build 3790 Service Pack 2.00
Memory: 1276444/2839988/1893724

Information

(Default) value for given extension (e.g. ".zip" or ".tif") is undefined. This may have happened when installing a third party application.

[HKEY_CLASSES_ROOT\.zip]
"Content Type"="application/x-zip-compressed"
"PerceivedType"="compressed"
[HKEY_CLASSES_ROOT\.tif]
"Content Type"="image/tiff"
"PerceivedType"="image"

Solution

Set (Default) value back to original value.

[HKEY_CLASSES_ROOT\.zip]
"Content Type"="application/x-zip-compressed"
"PerceivedType"="compressed"
@="CompressedFolder"
[HKEY_CLASSES_ROOT\.tif]
"Content Type"="image/tiff"
"PerceivedType"="image"
@="TIFImage.Document"

The “@” character refers to the “(Default)” registry value

Further questions?