0.92: XnViewMP not showing webp images when opened from Windows Explorer

[Mapaler]

XnViewMP does not have parameters with "open" command by default.
I've been modifying the registry myself for years. Now think it may be escalated as a bug?
Save the following code as a *.reg file, and run it. The path to XnViewMP needs to be modified

Code: Select all

Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\Applications\xnviewmp.exe\shell\open\command]
@="\"E:\\Program Files\\XnViewMP\\xnviewmp.exe\" \"%1\""

That is, add "%1" at the end of the registry value HKEY_CLASSES_ROOT\Applications\xnviewmp.exe\shell\open\command
After you do this, you can set any file to open by XnViewMP, Includes rare formats such as DICOM.

[anonymous_user]

Ok I just tested with XnViewMP 0.99.1 and it seems to be working. I can open webp files from Windows Explorer and they will display in XnViewMP. Fingers crossed it stays working.

[erty]

Same issue. Windows 11 x64, XnView 0.99.1. Png and jpeg open fine, but exactly same problem with webp.
I suspect it because .webp not in the system list of default extensions for XnView.
(Or maybe it happened after I installed ACDSee and it reassigned some files to itself)
https://paste.pics/ETX4E
Same settings for AcdSee for example:
https://paste.pics/ETX58

P.S. recommendation to add "%1" into "\HKEY_CLASSES_ROOT\webp_auto_file\shell\open\command"
Solved the problem for me, but this solution may be not so easy for everyone.

[anonymous377]

Also have 0.99.1 version on Windows 10 and got this problem, every images works fine, only webp wont open. Please fix that problem on newer versions.

[xnview]

Also have 0.99.1 version on Windows 10 and got this problem, every images works fine, only webp wont open. Please fix that problem on newer versions.

it seems that you have a problem in your registry entries

[bg17aw]

Also have 0.99.1 version on Windows 10 and got this problem, every images works fine, only webp wont open. Please fix that problem on newer versions.

it seems that you have a problem in your registry entries

Should at least make an effort to fix this. It is not us, it is a bug.
I have the same issue, on Classic, Win10, although it did work on older versions.
"C:\Program Files (x86)\XnView\xnview.exe" "%1" is present but still not working.

Can you tell us that you at least tried to duplicate this on a new Win10 instalation?

More context:
- on an older laptop, win7, xnview Classic 2.50, .webp opens just fine. The same "C:\Program Files (x86)\XnView\xnview.exe" "%1" is present, as on the other computer. So reg settings seem to be fine.

I uninstalled the Classic and installed MP, on the win10 machine. This solved the issue somehow, for now it works.

[Mapaler]

May be you have a "webp_auto_file" in registry.