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Nuget version upgrade - Invalid licnese issue Options
Ahmad Ahsan
Posted: Tuesday, February 17, 2026 1:33:16 AM
Rank: Newbie
Groups: Member

Joined: 2/17/2026
Posts: 1
I'm supposed to work on a code base which was using version 18.2.74.0 for EO.WebEngine, EO.Base, WO.WebBrowser but as soon as I launch the application it shows: "Your browser is not supported anymore"

I updated the version to 26.0.34 using the same license key and got the runtime exception:

Exception:
System.Exception: License data provided by AddLicense is invalid.
at EO.Internal.pejh.unno(peie out, String ouu)
at EO.Internal.xaiw.owwv(Object qz)
at EO.Internal.xaiw.owwu(Object qy)
at EO.WebBrowser.WebView.gpja(xagl ip, acld iq)
at EO.WebBrowser.WebView.gpkt(xagl ly, acld lz)


Begin_Block_1
gAAAADYL+rnKOMA5pPoRGnB
...
CWPl
LwU43A==
End_Block_1

Begin_Block_2
gAAAACDzI0W5tEzm+lwnle4oGZCbYQOew3
...
7RgsG9gtizGDGv8Xfw/QU/HRdD5P
End_Block_2


I don't have account details for now, any possible solution?
eo_support
Posted: Tuesday, February 17, 2026 10:43:20 AM
Rank: Administration
Groups: Administration

Joined: 5/27/2007
Posts: 24,467
Hi,

The error message "Your browser is not supported anymore" is normal. Older versions of EO.WebBrowser are based on older versions of the Chromium browser engine. If a website relies on new features in a newer browser then it may report older versions as unsupported.

You can run the new version in trial mode and see if it works for you. In order do that, please search for "AddLicense " in your source code and comment out that line. This will allow you to try the new version without a license. You will receive a license warning message but you can just ignore it and verify if there are still other problems.

If the new version does work for you, you can then purchase a new license for the current version to put it in production.

Thanks!


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