If you are having trouble opening Outlook in safe mode, there are several things you can try:

1. Use the Command Prompt to open Outlook in safe mode. To do this, open the Command Prompt as an administrator, and type in the command "outlook.exe /safe" (without the quotes). Press Enter to launch Outlook in safe mode.
2. Disable add-ins. Sometimes, Outlook add-ins can interfere with the program's ability to open in safe mode. To disable add-ins, go to the File menu in Outlook, select Options, and then select Add-Ins. From there, you can disable any add-ins that are currently active.
3. Repair your Outlook installation. If Outlook still won't open in safe mode, it's possible that there is a problem with the program itself. You can try repairing your Outlook installation by going to the Control Panel, selecting Programs and Features, and then selecting Microsoft Office. From there, select Change, and then select Repair.
4. Reinstall Outlook. If none of the above solutions work, you may need to uninstall and reinstall Outlook. To do this, go to the Control Panel, select Programs and Features, and then select Microsoft Office. From there, select Uninstall, and then follow the prompts to uninstall Office. Once Office is uninstalled, you can reinstall it using your original installation media or by downloading it from the Microsoft website.

If you continue to experience issues Start Outlook in safe mode, you may want to contact 3citcians support for further assistance.