Resolving "Cannot Start the Reminder Service" Error in MS Outlook

Microsoft Outlook reminders are scheduling components that can keep you alert at important events. The application shows a peculiar behavior when any of these items get corrupt, one of such has been described later. But if the corruption occurs together with PST file corruption, you need solution that might perform PST Recovery to recover pst file from MS Outlook.

For example, consider a case when you start Microsoft Outlook and receive an error message as below:

“Cannot start the reminder service. Unable to show reminders.”

The error suggests that the issues are related to Outlook reminders, which alone can be taken care of easily. But at times, you encounter this message in conjunction with another error like:

“An unknown error has occurred. 0X80040600”

With this error message, Outlook loses the ability to send and receive e-mail messages.


Outlook fails to show the reminders if one or more of these items in the folder are damaged or corrupted. You can simply resolve this issue by deleting the reminders. But if Outlook cannot perform e-mail operations as the second error also occurs, your PST might be damaged.


To solve specific reminders-related problem, you need to clean the reminders as follows:

1. Click ‘Start’ and then ‘Search’ or ‘Find’

2. Click ‘Files and Folders’, type ‘Outlook.exe’ in the named box and press ENTER

3. Note the full path of ‘Outlook.exe’ and close the box

4. Click ‘Start’ and then ‘Run’

5. Type the full path of ‘Outlook.exe’ (as noted above), press SPACEBAR, type ‘/’ (the forward slash) and then command-line switch ‘Cleanreminders’ to delete the reminders

If Outlook starts working as normal, you don’t need to take further steps, but in case e-mail delivery and sending is stopped because of PST issues, you should apply a suitable PST Recovery Tool.

Backup your PST and run Outlook Inbox Repair Tool (Scanpst.exe) to repair the corrupted PST. Scanpst.exe is a hidden file, so keep in mind to include hidden and system files before starting to search the file. If PST corruption still persists, you need a third-party PST File Recovery alternative.

Outlook PST Recovery Software is a professional utility that repairs corrupted PST and restores the data in a new, Outlook-usable PST. The PST Recovery Tool uses an advanced set of procedures to scan the file. The software has a 3-pane display that is easy to navigate and operate. It supports MS Outlook 2007, 2003, 2002, and 2000.

Scroll to Top