On this page we share troubleshooting solutions for common errors reported by PVCAD users. If these solutions do not resolve errors, please send an email to The more detail you are able to provide, the faster we will be able to assist you with the issue you are experiencing.


Switching your PVCAD or PVCAD Mega license to another computer

In the PVCAD Mega program, you can release your license key to make it available to use on another computer. Releasing your license key can be done on an as-needed basis. Please follow the steps below:


1) Go to About in the PVCAD (or PVCAD Mega) ribbon



2) Copy license key into a separate document where you can reference it later

3) Select the “Release Key” button

3) Follow installation instructions for installing PVCAD (or PVCAD Mega) on the new computer

4) Once installed, re-enter the key into the dialogue window on the new computer.



Resolving firewall and connectivity issues

If you are having difficulty downloading or using PVCAD Mega, check to see if your firewall is configured to allow communications with PVCAD Mega. Connectivity issues sometimes generate a 500 code error. To resolve, look in your security settings for apps allowed through the firewall. In Windows, type ‘Allow an app through Windows Firewall’ in the Start menu for a shortcut to the settings panel. There, click Change settings, then Allow another app. Then browse to your PVCAD Mega program files and select two executable files, PVCADMega.exe and AcWebBrowser.exe, if they do not already appear in the allowed apps list. This video demonstrates the process.

Adding Your Own Modules and/or Inverters

Users can add their own modules and inverters to the database for their own use. Select the Database icon in the PVCAD ribbon. Type in the needed variables. Once submitted, the module or inverter is available to design your project. Note that any entries to a personal database are limited to that PVCAD Mega device and can not generate production estimates. Contact to add an inverter or modules the public database.


PVCAD Mega Can’t Find Templates

If you receive the error shown below, or something similar saying that the ‘Template’ could not be found, please follow the steps below.


Step 1

Navigate to the PVCAD Mega Installation Directory. You should see a ‘Templates’ folder and a ‘Support’ folder right next to each other.

Step 2

Drag the ‘Templates’ folder into the ‘Support’ folder.

Step 3

Try running your process again.


What if I can’t add PVComplete templates to AutoCAD?

Some network firewalls block file imports from unrecognized sources. If you are having trouble adding PVComplete templates to AutoCAD, check with your IT department and ask to greenlight all URLs that contain pvcomplete.