no bug [Irfanview Thumbnails] /thumbs: Can't read file header. Unknown file format, empty

[zakk]

Using IrfanView 4.51 x64 in win10 v1803.

Whenever I rightclick in File Explorer on any folder, and press "Browse with IrfanView" even on c:\1, an empty folder , I get the following error popup (also see attached screenshot):

C:\1 /thumbs: Can't read file header ! 
Unknown file format, empty/damaged file or file not found !

If I press OK at the popup, then Irfanview Thumbnails starts ok.

I don't have any problem when opening files directly in IrfanView, by doubleclicking them in File Explorer

[Bhikkhu Pesala]

I just get the context menu. Do you see something like that?



What do you have enabled in Shell Options?

[zakk]

Sorry, I missed:
"Whenever I rightclick in File Explorer on any folder, and press "Browse with IrfanView" .

Here are the two screenshots:

[Bhikkhu Pesala]

Confirmed. I sent a report to Irfan Skiljan.

[zakk]

Thank you for the quick response!

[Bhikkhu Pesala]

I fixed it after getting a hint from Irfan Skiljan. Try this (I did the reverse to use 32-bit version, which is better as it supports all plugins).

1. Run C:\Program Files (x86)\IrfanView\i_view32.exe as Administrator
2. Disable the "Add Browse with IrfanView" for drives and folders in shell menu
3. Run C:\Program Files\IrfanView\i_view64.exe as Administrator
4. Enable the "Add Browse with IrfanView" for drives and folders in shell menu

[zakk]

I only have the 64-bit version installed, so by running i_view64.exe as admin and disabling and re-enabling "Add Browse with IrfanView" the issue is fixed for me too.
Thank you.

[Bhikkhu Pesala]

Glad to hear that it is fixed for you now.