New article: 75

Author: iBug

_posts/2025/2025-04-22-windows-10-ltsc-onedrive-explorer-sidebar-fix.md

@@ -0,0 +1,83 @@
+---
+title: "Fixing OneDrive not expanding in Explorer sidebar on Windows 10 LTSC"
+tags: windows
+redirect_from: /p/75
+---
+
+I've recently re-installed Windows 10 LTSC for both of my computers, and after setting up OneDrive (from Office 365 suite), I noticed that the OneDrive folder in the Explorer sidebar was not expanding when clicked, showing a static gray arrow.
+This *could* be a known issue with Windows 10 LTSC, as it doesn't include OneDrive integration by default, unlike consumer versions.
+
+For readers who want to skip the details, just head to the [**Solution**](#solution) section.
+
+## Gathering Information
+
+Looking for "Windows 10 OneDrive doesn't expand" on Google, [One drive folder tab not expanding](https://answers.microsoft.com/en-us/msoffice/forum/all/one-drive-folder-tab-not-expanding/04eac1d9-2665-4c5e-b02b-9976fbcf2c49) shows up first.
+It contains no useful information other than a link to another: [Cannot access Onedrive - Personal folder through Quick Access of File Explorer](https://answers.microsoft.com/en-us/windows/forum/all/cannot-access-onedrive-personal-folder-through/fb21a27c-bf5a-4371-926e-9ff869070f03).
+
+The second link is much better populated with information, notably there's a valid workaround:
+
+> ```ini
+> Windows Registry Editor Version 5.00
+>
+> [HKEY_CLASSES_ROOT\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\InitPropertyBag]
+> "TargetKnownFolder"=""
+>
+> [HKEY_CLASSES_ROOT\WOW6432Node\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\InitPropertyBag]
+> "TargetKnownFolder"=""
+> ```
+>
+> Save them as a .reg file, run it each time you log on (and after One Drive running)
+
+Note how this needs to be applied every time OneDrive starts, which is something to further investigate.
+
+With a bit more trying and Googling, it turns out OneDrive sets these keys to `{a52bba46-e9e1-435f-b3d9-28daa648c0f6}`, which is the KnownFolderID for the OneDrive folder, and is missing from the registry.
+
+From the two `bbs.pcbeta.com` links (Chinese: 远景论坛, [1](https://bbs.pcbeta.com/viewthread-1933367-2-2.html) #32, [2](https://bbs.pcbeta.com/viewthread-1936542-1-2.html) #17) mentioned in the thread, adding back the missing registry keys for `{a52bba46-e9e1-435f-b3d9-28daa648c0f6}` should fix the issue.
+
+## Solution
+
+Just import the missing registry keys for OneDrive.
+These registry keys are exported from a working Windows 10 Enterprise installation.
+
+```ini
+Windows Registry Editor Version 5.00
+
+[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FolderDescriptions\{A52BBA46-E9E1-435f-B3D9-28DAA648C0F6}]
+"Attributes"=dword:00000001
+"Category"=dword:00000004
+"DefinitionFlags"=dword:00000040
+"Icon"=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,74,\
+  00,25,00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,69,00,\
+  6d,00,61,00,67,00,65,00,72,00,65,00,73,00,2e,00,64,00,6c,00,6c,00,2c,00,2d,\
+  00,31,00,30,00,34,00,30,00,00,00
+"LocalizedName"=hex(2):40,00,25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,\
+  6f,00,6f,00,74,00,25,00,5c,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,\
+  00,5c,00,53,00,65,00,74,00,74,00,69,00,6e,00,67,00,53,00,79,00,6e,00,63,00,\
+  43,00,6f,00,72,00,65,00,2e,00,64,00,6c,00,6c,00,2c,00,2d,00,31,00,30,00,32,\
+  00,34,00,00,00
+"LocalRedirectOnly"=dword:00000001
+"Name"="OneDrive"
+"ParentFolder"="{5E6C858F-0E22-4760-9AFE-EA3317B67173}"
+"ParsingName"="shell:::{018D5C66-4533-4307-9B53-224DE2ED1FE6}"
+"RelativePath"="OneDrive"
+
+[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\FolderDescriptions\{A52BBA46-E9E1-435f-B3D9-28DAA648C0F6}]
+"Attributes"=dword:00000001
+"Category"=dword:00000004
+"DefinitionFlags"=dword:00000040
+"Icon"=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,74,\
+  00,25,00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,69,00,\
+  00,31,00,30,00,34,00,30,00,00,00
+"LocalizedName"=hex(2):40,00,25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,\
+  6f,00,6f,00,74,00,25,00,5c,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,\
+  00,5c,00,53,00,65,00,74,00,74,00,69,00,6e,00,67,00,53,00,79,00,6e,00,63,00,\
+  43,00,6f,00,72,00,65,00,2e,00,64,00,6c,00,6c,00,2c,00,2d,00,31,00,30,00,32,\
+  00,34,00,00,00
+"LocalRedirectOnly"=dword:00000001
+"Name"="OneDrive"
+"ParentFolder"="{5E6C858F-0E22-4760-9AFE-EA3317B67173}"
+"ParsingName"="shell:::{018D5C66-4533-4307-9B53-224DE2ED1FE6}"
+"RelativePath"="OneDrive"
+```
+
+Note that this article happens to reproduce [this blog](https://lolicp.com/windows/202309626.html) from lolicp.com, which may be of Chinese readers' interest.