CODESYS Gateway does not start, cannot scan CODESYS devices

[AlfredoQuintero]

Hello:
I have a problem I had never seen before with CODESYS and it seems to have happened after I added some new installation to this Windows workstation.
As shown on the screenshot below, the CODESYS gateway does not start, and as a result it is not possible to scan CODESYS devices. Looked into CODESYS forums and there are a number of similar inquiries but no explanation on the resolution.
Would be very helpful if someone has found this issue and could share a solution.

 

[lostcontrol]

Silly q, but have you restarted the PC.?
I had this with v19, but a restart solved it

 

[AlfredoQuintero]

Thanks for confirming the basics. Yes I did restart the PC.

 

[AustralIan]

In CODESYS Installer, Settings, change the default gateway to the version you want to use ( and back again). #random-troubleshooting-ideas

 

[paraffin power]

I've had this. I reinstalled and it was ok. Not ideal...

 

[AlfredoQuintero]

In CODESYS Installer, Settings, change the default gateway to the version you want to use ( and back again). #random-troubleshooting-ideas

Once again, AustralIan, you have come to the rescue.
Your solution worked. Thanks so much.
paraffin power, thanks for your comments too.