Problems with Junction to MicroSD
Posted: 19 Apr 2026 12:55
Windows 11 25H2 (OS Build 26200.8246) running XYplorer 28.30.0200 on a custom build.
I created a junction to a 128GB MicroSD attached to my PC in a provided Micro slot using "mklink /J MicroSD \\?\Volume{0e443f57-4623-11ed-834f-ac1203d55754}\".
Although this was perfectly accessible from File Explorer, XYPlorer gave the error "The system cannot find the file specified...".
When I either created a file or a directory on it with File Explorer, suddenly it was accessible from XYplorer!!
This also happened on a Surface Pro 4 running Windows 11 with the same version of XYplorer.
Second problem: on the Surface Pro I tried copying ~80GB to a 400GB MicroSD with 336GB free.
A custom copy ran for a short while and then claimed there wasnot enough space on the disk and nothing was copied.
File Explorer - no problems.
It is possible that this was related to the XYplorer Custom Copy configuration of "Junctions: Skip" on the Surface Pro 4, although if so the error notification was inadequate.
(It is "Junctions: Copy as folders" on the 1st PC).
Also, although this is more anecdotal as I cannot be bothered providing details, a similar error plagued me recently.
I had a Junction to a disk partition, I then created a second junction to a directory under the first junction.
Some of the files under that link gave similar errors along the lines of "file path not found" even when the file path was valid.
So C:\Pool junction -> \\?\Volume{8a835b98-f973-405a-be0f-0b485f7426ce},
2nd junction = C:\GeekMenu -> C:\Pool\GeekMenu\.
Roughly 1/5 of the subfolders under GeekMenu had problems accessing files.
Changed C:\GeekMenu -> \\?\Volume{8a835b98-f973-405a-be0f-0b485f7426ce}\GeekMenu\ and it worked.
Go figure. Cannot cope with multiple junctions?
I created a junction to a 128GB MicroSD attached to my PC in a provided Micro slot using "mklink /J MicroSD \\?\Volume{0e443f57-4623-11ed-834f-ac1203d55754}\".
Although this was perfectly accessible from File Explorer, XYPlorer gave the error "The system cannot find the file specified...".
When I either created a file or a directory on it with File Explorer, suddenly it was accessible from XYplorer!!
This also happened on a Surface Pro 4 running Windows 11 with the same version of XYplorer.
Second problem: on the Surface Pro I tried copying ~80GB to a 400GB MicroSD with 336GB free.
A custom copy ran for a short while and then claimed there wasnot enough space on the disk and nothing was copied.
File Explorer - no problems.
It is possible that this was related to the XYplorer Custom Copy configuration of "Junctions: Skip" on the Surface Pro 4, although if so the error notification was inadequate.
(It is "Junctions: Copy as folders" on the 1st PC).
Also, although this is more anecdotal as I cannot be bothered providing details, a similar error plagued me recently.
I had a Junction to a disk partition, I then created a second junction to a directory under the first junction.
Some of the files under that link gave similar errors along the lines of "file path not found" even when the file path was valid.
So C:\Pool junction -> \\?\Volume{8a835b98-f973-405a-be0f-0b485f7426ce},
2nd junction = C:\GeekMenu -> C:\Pool\GeekMenu\.
Roughly 1/5 of the subfolders under GeekMenu had problems accessing files.
Changed C:\GeekMenu -> \\?\Volume{8a835b98-f973-405a-be0f-0b485f7426ce}\GeekMenu\ and it worked.
Go figure. Cannot cope with multiple junctions?