Overview 

The procedures of switching from a 32-bit Kerio Connect version to a 64-bit version differ on both 64-bit Windows and 32-bit Windows systems.

Note: It is recommended to keep a full backup of your current installation before proceeding.

Solution

64-bit Windows

If you have a 32-bit version of Kerio Connect installed on a 64-bit Windows system, and you want to run Kerio Connect in 64-bit, you can either:

• upgrade to a newer 64-bit version of Kerio Connect, or
• reinstall your same Kerio Connect version in 64-bit. 

Upgrade to the latest 64-bit version of Kerio Connect as follows.

1. Uninstall the 32-bit version of your Kerio Connect. 
   Note: Do not remove the configuration files and data store during the process.
   
   
2. Move the Kerio/MailServer directory fromProgram Files (x86) folder toProgram Files folder.
   
3. Locate and open the mailserver.cfg file from the moved directory and change all paths from C:\Program Files (x86)\ to C:\Program Files\.
4. Now, install a new Kerio Connect 64-bit version. 
   Note: During the process, do not change the destination folder and select the Keep current configuration option.
   
   
5. Confirm that the Kerio Connect is successfully upgraded from a 32-bit installation to 64-bit. Kerio Connect Monitor app should be running.
   

Reinstall your same Kerio Connect version in 64-bit as follows:

1. Uninstall the Kerio Connect 32-bit version.
   Note: Do not remove the configuration files and data store during the process.
   
   
2. Move the Kerio/MailServer directory from Program Files (x86) folder to Program Files folder (the default installation folder for 64-bit programs).
3. Locate and open the mailserver.cfg file from the moved directory and change all paths from C:\Program Files (x86)\ to C:\Program Files\.
4. Install your same Kerio Connect version in 64-bit.
   Note: During the process, do not change the destination folder and select the Keep current configuration option.  
   
   
5. Confirm that the 64-bit Kerio Connect is successfully switched from a 32-bit installation to 64-bit. Kerio Connect Monitor app should be running.
   

32-bit Windows 

If you have a 32-bit version of Kerio Connect installed on a 32-bit Windows system and you want to run a 64-bit version of Kerio Connect on a 64-bit Windows machine, you need to follow the steps below.

1. Uninstall the 32-bit version of your Kerio Connect on your 32-bit Windows system.   
   Note: Do not remove the configuration files and data store during the process.
   
   
2. Move the Kerio/MailServer directory from the Program Files folder on your 32-bit Windows machine to Program Files folder on your 64-bit system.
3. On your 64-bit system, install the 64-bit version of Kerio Connect.
   Note: During the process, do not change the destination folder and select the Keep current configuration option.
   
   
4. Confirm that the Kerio Connect is successfully switched from a 32-bit installation to 64-bit. Kerio Connect Monitor app should be running.
   

Related Articles

Switching from a 32-bit installation of Kerio Connect to 64-bit on Linux.

Switching from a 32-bit installation of Kerio Connect to 64-bit on Virtual Appliances.