High Number Of Envirnoment Variables Crashes 64 Bit XYPlorer
Posted: 10 Aug 2026 01:56
XYPLORER VERSION: 28.30.1800 (but have been experiencing on beta builds for several months -- at least as far back as 28.30.0.1603)
WINDOWS VERSION: Win 11 26H2 build 26300.9032 (currently on dev build, but had same issue when on normal beta insider build on 25H1. I don't think it relates to the insider build and presumably would have the same issue on a non-insider build).
SCALING: 150%
I rely heavily on environment variables and have a bunch of them. A few months ago, 64 bit xyplorer stopped working for me on both of my machines. I've been using the 32-bit version (which continues to work fine) since then, but finally had some time to investigate the 64-bit issue this afternoon. The crashes appear to be because i crossed some threshold number of environment variables. The max number of variables 64 bit can handle seems to be somewhere around 256-260 or so. Unclear why the cutoff appears to be a bit fuzzy instead of an exact number, but probably not important.
fewer than 256-260 environment variables -- 64 bit works fine. more than that -- xyplorer 64 bit crashes immediately and silently at startup 100% of the time.
The process briefly appears in Task Manager, then exits without opening a window or showing an error. The trigger appears to be variable count, and not content. I reproduced it with meaningless dummy variables (`ZZTEST001=x`, etc.) -- the same cutoff applied somewhere around 256-260 variables.
Event Viewer:
WINDOWS VERSION: Win 11 26H2 build 26300.9032 (currently on dev build, but had same issue when on normal beta insider build on 25H1. I don't think it relates to the insider build and presumably would have the same issue on a non-insider build).
SCALING: 150%
I rely heavily on environment variables and have a bunch of them. A few months ago, 64 bit xyplorer stopped working for me on both of my machines. I've been using the 32-bit version (which continues to work fine) since then, but finally had some time to investigate the 64-bit issue this afternoon. The crashes appear to be because i crossed some threshold number of environment variables. The max number of variables 64 bit can handle seems to be somewhere around 256-260 or so. Unclear why the cutoff appears to be a bit fuzzy instead of an exact number, but probably not important.
fewer than 256-260 environment variables -- 64 bit works fine. more than that -- xyplorer 64 bit crashes immediately and silently at startup 100% of the time.
The process briefly appears in Task Manager, then exits without opening a window or showing an error. The trigger appears to be variable count, and not content. I reproduced it with meaningless dummy variables (`ZZTEST001=x`, etc.) -- the same cutoff applied somewhere around 256-260 variables.
Event Viewer:
Code: Select all
Faulting application name: XYplorer.exe, version: 28.30.0.1800
Faulting module name: ntdll.dll, version: 10.0.26100.9032
Exception code: 0xc0000374 (heap corruption)
