1. To open the Task Manager, press CTRL + SHIFT + ESC.
2. Click File , press CTRL and click New Task (Run…) at the same time. A command prompt opens.
3. At the command prompt, type notepad, and then press ENTER.
4. Paste the following text into Notepad:

Windows Registry Editor Version 5.00

[-HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.exe]

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.exe]

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.exe\OpenWithList]

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.exe\OpenWithProgids]
“exefile”=hex(0):

5. On the File menu, click Save as.
6. Select All Files in the Save as type list, and then type Exe.reg in the File name box.
7. Select Unicode in the Encoding list. Save it and remember the file location.
8. Return to the Command Prompt window, type REG IMPORT [filepath]Exe.reg, and then press ENTER.
Note: [filepath] is a placeholder which is to input your Exe.reg file location (e.g. C:\Exe.reg).
9. Click Yes, and then click OK in response to the registry prompts.
10. Log off from your account. Then, log back onto your account.