[Talk-us] SunCertPathBuilderException

Greg Morgan dr.kludge.gm at gmail.com
Mon Dec 14 22:58:35 UTC 2015

Checking the certificate[1] via a web browser says that the certificate for
https://josm.openstreetmap.de/wiki/StartupPage is valid from ‎Friday,
‎December ‎09, ‎2016 1:37:29 PM until 12/9/2016.  If you haven't used this
computer for awhile you might check your JOSM version.  I had no problems
last night nor since the cert was issued on 12/9 with the latest version of
JOSM. I don't know if the SHA-1 issue[2] is related.

If the issue is a proxy problem as Mike pointed out, then I recall that you
have to add -Dhttp.proxyHost=yourProxyURL to your JOSM arguments before you
can change the proxy settings in your preferences.

[2] http://blog.chromium.org/2014/09/gradually-sunsetting-sha-1.html

On Mon, Dec 14, 2015 at 1:49 PM, Alan Bragg <alan.d.bragg at gmail.com> wrote:

> At 3pm EST JOSM is refusing to start. I getting this message.
> ​If I ignore the message I can continue to use JOSM as usual.
> -----------------------------
>         JOSM tried to access the following resources:
>    - https://josm.openstreetmap.de/maps
>    - https://josm.openstreetmap.de/wiki/StartupPage
> but *failed* to do so, because of the following network errors:
>    - sun.security.provider.certpath.SunCertPathBuilderException: unable
>    to find valid certification path to requested target
> It may be due to a missing proxy configuration.
> Would you like to change your proxy settings now?
> --------------------------------------------------------------------------------------
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