FIX: Too many posts were made to a semaphore when applying attributes. (Solved)

If you receive the error "Too many posts were made to a semaphore" when trying to change the attributes on an application (.exe) file, continue reading below to fix the problem.

The "Error Applying Attributes: An error occurred applying attributes to the file "name-of-file.exe". Too many posts were made to a semaphore", is usually appears when trying to modify the attributes on a "Read Only" file (e.g. when you want to "Unblock" an application or file that comes from an untrusted publisher.).

How to Fix: Cannot Unblock File – Too many posts were made to a semaphore, on Windows 10/11.

1. Right-click on the file or programs that gives you the error and select Properties.

2. In General tab, uncheck the Read-only checkbox and click OK.

3. Click Continue on "Access Denied" message and you done! Now try to change the attributes of the program.

That's all folks! Did it work for you?
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Konstantinos Tsoukalas

Konstantinos is the founder and administrator of Repairwin.com. Since 1995 he works and provides IT support as a computer and network expert to individuals and large companies. He is specialized in solving problems related to Windows or other Microsoft products (Windows Server, Office, Microsoft 365, etc.).

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