How to Fix DingTalk 7.5 Windows Permission Errors by Restoring Registry Permissions
This article explains why DingTalk 7.5 corrupts Windows registry permissions, causing Explorer and system component errors, and provides both the official repair tool link and a step‑by‑step manual method to restore the Users read permission in the registry.
On January 9, DingTalk held a 7.5 version release event, but version 7.5.0 was already released on January 8 and gradually pushed to users.
Many users who updated to the new version on Windows 10 and Windows 11 encounter the error “Explorer.EXE Windows cannot access the specified device, path, or file. You may not have the appropriate permission to access this item.”
The error can appear when opening any software, and other system components such as the Start menu, time and date module, and Recycle Bin may also become unresponsive.
According to discussions on Zhihu, DingTalk’s customer service has admitted that the issue is caused by the 7.5.0 upgrade, but no temporary solution was initially provided.
Research shows that DingTalk modifies the registry key \HKEY_CLASSES_ROOT\PackagedCom\ClassIndex\ by adding “Everyone” read permission, which removes the existing “Users” permission.
Normally this subkey does not contain the “Everyone” permission; once added, the original “Users” permission disappears, leading to the described failures.
DingTalk later confirmed the problem and released an official fix tool, so users no longer need to manually edit the registry.
Official response: the 7.5.0 version has a compatibility issue with a certain Windows version; a repair tool is now available for download and can be run to restore normal operation.
Repair tool download address: https://files.alicdn.com/tpsservice/4cd189346f8d1edee2e346e72eb2905a.zip
For those who still prefer manual fixing, the steps are:
Open the Registry Editor by running regedit .
Navigate to Computer\HKEY_CLASSES_ROOT\PackagedCom\ClassIndex\ .
Right‑click the ClassIndex key and select “Permissions”.
Click “Add”.
In the object name field, type users and click “Check Names”.
After the name is verified, click OK.
Check the “Read” permission under the Users group.
Click OK and restart the system.
If the Start menu or taskbar is unusable, you can open Task Manager (Ctrl+Alt+Del), choose “Run new task”, type regedit , and continue with the above steps.
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