A known issue with Time Matters 16.1 and earlier can cause an error message in Adobe Acrobat Reader DC:
The error message may appear when you attempt to use the TMSave button in Acrobat Reader DC.
Here are two fixes for this Protected Mode issue:
- Upgrade to Time Matters 16.2, or
- Change a Windows Registry entry.
To change the Registry entry:
Back up your computer or at least back up the Registry:
Click Start, type regedit.exe in the search box, and then press Enter.
In Registry Editor, click on the top item, Computer.
Click File > Export.
Give the file a name and press Save.
Close the Registry Editor.
In the Search Box, type: cmd
Copy and paste the following into the Command Prompt window:
Reg Add "HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\17.0\Privileged" /v bProtectedMode /t Reg_Dword /d