Error 380 after upgrade

[thomster]

Hi, just upgraded to 28.40.0000 from the previous released version and I get a dialog box titled "Error 380" when attempting to start XYplorer:

Error: 380 (0x0000017C)
Desc: Invalid property value
Dll: 0
Proc: IB@0

Source:
XY ver: XYplorer 28.40.0000 (64-bit) (Virgin) -
OS: Windows 11 Pro, 64-bit, Version 25H2, Build 26200.9457 (10.0)
Locale: 2057 (en-GB)
ANSI: 1252, ACP: 1252 (ANSI - Latin I)
Font: 0, 0, DBCS: No
DPI: 96 (100%), 1920x1080

Date: 2026-09-23 17:04:22

Windows 11 Pro 25H2
Scaling 100%

Any help would be much appreciated!

[admin]

Interesting, looks exactly like this: https://www.xyplorer.com/xyfc/viewtopic.php?t=29910

1) From which version did you upgrade?

2) Does it start when you temporarily rename XYplorer.ini (before starting it)?

3) Is the Consolas font present on your system?

[thomster]

Hi, I upgraded from whatever the last released version was (I run it daily and always upgrade when offered).

XYplorer starts up (in trial mode) after renaming xyplorer.ini.

How can I get my settings back?

Thanks.

[admin]

That was just a test. Just undo your rename to recover your settings. Then please try the new beta v28.40.0002. It has a better error message.

[thomster]

Hi, here's the error with 28.40.0002

Error: 380 (0x0000017C)
Desc: Invalid property value
Dll: 0
Proc: IB@0 <75>

Source:
XY ver: XYplorer 28.40.0002 (64-bit) (Virgin)
OS: Windows 11 Pro, 64-bit, Version 25H2, Build 26200.9457 (10.0)
Locale: 2057 (en-GB)
ANSI: 1252, ACP: 1252 (ANSI - Latin I)
Font: 0, 0, DBCS: No
DPI: 96 (100%), 1920x1080

Date: 2026-09-23 18:55:20

[admin]

Cool, the plot thickens. I'll upload another beta soon. Please try that too.

[thomster]

Hi, error message with 28.40.0003

Error: 380 (0x0000017C)
Desc: Invalid property value
Dll: 0
Proc: LOUS@0 <70>

Source:
XY ver: XYplorer 28.40.0003 (64-bit) (Virgin)
OS: Windows 11 Pro, 64-bit, Version 25H2, Build 26200.9457 (10.0)
Locale: 2057 (en-GB)
ANSI: 1252, ACP: 1252 (ANSI - Latin I)
Font: 0, 0, DBCS: No
DPI: 96 (100%), 1920x1080

Date: 2026-09-23 19:36:29

Clicking past the error does open XYplorer but my default tabs are missing. Also, when closing XYplorer, the process continues to run in the background.

[admin]

Fascinating. We need one more round. The next beta will show me the exact line that causes the error.

[thomster]

Error with 28.40.0004

Error: 380 (0x0000017C)
Desc: Invalid property value
Dll: 0
Proc: LOUS@0 <70>

Source:
XY ver: XYplorer 28.40.0004 (64-bit) (Virgin)
OS: Windows 11 Pro, 64-bit, Version 25H2, Build 26200.9457 (10.0)
Locale: 2057 (en-GB)
ANSI: 1252, ACP: 1252 (ANSI - Latin I)
Font: 0, 0, DBCS: No
DPI: 96 (100%), 1920x1080

Date: 2026-09-23 19:56:35

[admin]

Hmm, the same as before. Not what I expected, but also interesting. I'll try a fix in the next beta. (I forgot to mention that I get no error here, so I'm shooting in the dark.)

[thomster]

Hi, error from 28.40.0005. I appreciate all your help with this

Error: 380 (0x0000017C)
Desc: Invalid property value
Dll: 0
Proc: LOUS@0 <70>

Source:
XY ver: XYplorer 28.40.0005 (64-bit) (Virgin)
OS: Windows 11 Pro, 64-bit, Version 25H2, Build 26200.9457 (10.0)
Locale: 2057 (en-GB)
ANSI: 1252, ACP: 1252 (ANSI - Latin I)
Font: 0, 0, DBCS: No
DPI: 96 (100%), 1920x1080

Date: 2026-09-23 20:15:01

[admin]

Hmm, it's getting weirder again. I uploaded another try...

[thomster]

Hi, from 28.40.0006

Error: 380 (0x0000017C)
Desc: Invalid property value
Dll: 0
Proc: LOUS@0 <70>

Source:
XY ver: XYplorer 28.40.0006 (64-bit) (Virgin)
OS: Windows 11 Pro, 64-bit, Version 25H2, Build 26200.9457 (10.0)
Locale: 2057 (en-GB)
ANSI: 1252, ACP: 1252 (ANSI - Latin I)
Font: 0, 0, DBCS: No
DPI: 96 (100%), 1920x1080

Date: 2026-09-23 20:40:55

I can't test again tonight, I will continue tomorrow. Thanks.

[admin]

Same here, let's continue tomorrow. Thank you!

[admin]

PS: Got it now! Expect fix tomorrow.

Since the glow-up, the error hits all users whose one-year Standard License expired (which happened to you yesterday ).