Ok, I finally got my BF1942 working! On Windows 11.
1) Click start menu, type regedit in the search field (or hit Windows+R )
2) Navigate to the following section(s) depending on your OS,
For those of you that don't have an Origin folder located in either of these two locations:
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Electronic Arts\Origin\Battlefield 1942\ergc (FOR 64bit OS)
HKEY_LOCAL_MACHINE\SOFTWARE\Electronic Arts\Origin\Battlefield 1942\ergc (FOR 32bit OS)
3) You need to create it yourself. I have Win 11 x64, so I made an Origin folder (also known as a "key" in the registry) under Electronic Arts.
To create this "folder", right-click on Electronic Arts and then choose "New" and then "Key". Now it should allow you to give it a name, rename it as "Origin".
4) Next, right-click on the Origin "key" you just made and again pick "New" and then "Key". Give this new key a name of "Battlefield 1942".
5) Next, right-click on the Battlefield 1942 "key" you just made and again pick "New" and then "Key". Give this new key a name of ergc
6) Next, click on the ergc "key", on the right-hand side you'll see it has a string value called "Default". Right-click it and then choose "Modify".
Now you need to copy your "Product GUID" key from Origin and paste it as the new modified value located at.
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Origin\Battlefield 1942 (FOR 64bit OS) Copy Product GUID value over to ergc default value.
HKEY_LOCAL_MACHINE\SOFTWARE\Origin\Battlefield 1942 (FOR 32bit OS) Copy Product GUID value over to ergc default value.
7) You do NOT need to include spaces, just copy and paste the key and click on "Ok".
