Loading TLS Certificate triggers ''The file is too big'' error

Symptom

When attempting to load the TLS Certificate, the following error is shown:

The file is too big!

This is due to the encryption certificates already existing on the ISC. You cannot load a certificate over an existing certificate.

To install the encryption certificates onto the ISC, do the following:

Browse to C:\Program Files (x86)\OnGuard\Certificates.
Right-click on each of the four Mercury certificates and click on Install Certificate. You will see an “Import Successful” message after each certificate is imported.
Stop the Communications Server.
Take the ISC offline in System Administration.
Select the ISC to which you are adding the encryption certificates.
Navigate to the Options tab.
Click Modify and select TLS Encryption and then click [OK].
Navigate to the Location tab and select Configuration Web Page.
Navigate to Host Communications.
In the Data Security drop down, select TLS Encryption, and then click [Accept].
Click [Apply Settings].
Click [Apply, Reboot].
Turn on the Communications Server.
Bring the ISC back online.

The ISC should now be communicating.

All ISCs

All versions of OnGuard