How to restore the Process Name column in Process Explorer?

Using regedit, remove the key HKCU\Software\Sysinternals\Process Explorer, then start Process Explorer.

I would suggest to first Export the key, just in case.

The following did the trick for me:

• Close Process Explorer. Make sure that it does not stay open in the tray.

• Adding a REG_DWORD named 0 and with a value greater than 0 (column width) to HKCU\Software\Sysinternals\Process Explorer\ProcessColumns

• Modifying HKCU\Software\Sysinternals\Process Explorer\ProcessImageColumnWidth and setting it to a value greater than 0.

• Incrementing HKCU\Software\Sysinternals\Process Explorer\ProcessColumnCount by one.