This is odd behavior. In my aspnet 2.0 app (basic app, nothing out of the
ordinary here), if I am using my iPAQ handheld device and I hit the refresh
button on my page, I get an error "Validation of viewstate MAC failed. If
this application is hosted by a Web Farm or cluster, ensure that
<machineKey> configuration specifies the same validationKey and validation
algorithm. AutoGenerate cannot be used in a cluster."
The interesting thing is I can not reproduce this using IE or Opera on my
desktop. The user agent reported by my iPAQ browser is "Mozilla/4.0
(compatible; MSIE 4.01; Windows CE; PPC; 240x320)"
I also tried adding the following machineKey to my macine.config file, which
didn't help:
<machineKey
validationKey=" 9CCEC30E6D16956 36BC548918FC190 EAC06714B6B44CC A2168B7DB439EC6 684025E84514A82 98545E74B015E22 B69B1C3DD845F23 7BE470FC5650182 F46B9111"
decryptionKey=" 126EA9F8AD60164 92548AA59BAEB5D 8012B947145126A 19A"
validation="SHA 1"/>
Any ideas?
2  1570 
Hi,
you might want to report this on: http://forums.asp.net/thread/1173230.aspx
--
Teemu Keiski
ASP.NET MVP, AspInsider
Finland, EU http://blogs.aspadvice.com/joteke
"Jeremy Chapman" <no****@please. com> wrote in message
news:eM******** ******@TK2MSFTN GP03.phx.gbl... This is odd behavior. In my aspnet 2.0 app (basic app, nothing out of the
ordinary here), if I am using my iPAQ handheld device and I hit the
refresh button on my page, I get an error "Validation of viewstate MAC
failed. If this application is hosted by a Web Farm or cluster, ensure
that <machineKey> configuration specifies the same validationKey and
validation algorithm. AutoGenerate cannot be used in a cluster."
The interesting thing is I can not reproduce this using IE or Opera on my
desktop. The user agent reported by my iPAQ browser is "Mozilla/4.0
(compatible; MSIE 4.01; Windows CE; PPC; 240x320)"
I also tried adding the following machineKey to my macine.config file,
which didn't help:
<machineKey
validationKey=" 9CCEC30E6D16956 36BC548918FC190 EAC06714B6B44CC A2168B7DB439EC6 684025E84514A82 98545E74B015E22 B69B1C3DD845F23 7BE470FC5650182 F46B9111"
decryptionKey=" 126EA9F8AD60164 92548AA59BAEB5D 8012B947145126A 19A"
validation="SHA 1"/>
Any ideas?
I figured out what the issue was. In some environments (IE on a windows CE
device, in my case) hidden fields can only be a certain length. I don't
know what the length is, but in some of my pages I must have exceeded it. I
turned event validation off in the web config, and I made the page store the
viewstate in the session. Storing the viewstate in the session can cause a
wrinkle when using the back button -which I don't have a solution for yet,
but at least I'm not getting these errors.
"Teemu Keiski" <jo****@aspalli ance.com> wrote in message
news:u4******** ******@TK2MSFTN GP05.phx.gbl... Hi,
you might want to report this on:
http://forums.asp.net/thread/1173230.aspx
--
Teemu Keiski
ASP.NET MVP, AspInsider
Finland, EU
http://blogs.aspadvice.com/joteke
"Jeremy Chapman" <no****@please. com> wrote in message
news:eM******** ******@TK2MSFTN GP03.phx.gbl... This is odd behavior. In my aspnet 2.0 app (basic app, nothing out of
the ordinary here), if I am using my iPAQ handheld device and I hit the
refresh button on my page, I get an error "Validation of viewstate MAC
failed. If this application is hosted by a Web Farm or cluster, ensure
that <machineKey> configuration specifies the same validationKey and
validation algorithm. AutoGenerate cannot be used in a cluster."
The interesting thing is I can not reproduce this using IE or Opera on my
desktop. The user agent reported by my iPAQ browser is "Mozilla/4.0
(compatible; MSIE 4.01; Windows CE; PPC; 240x320)"
I also tried adding the following machineKey to my macine.config file,
which didn't help:
<machineKey
validationKey=" 9CCEC30E6D16956 36BC548918FC190 EAC06714B6B44CC A2168B7DB439EC6 684025E84514A82 98545E74B015E22 B69B1C3DD845F23 7BE470FC5650182 F46B9111"
decryptionKey=" 126EA9F8AD60164 92548AA59BAEB5D 8012B947145126A 19A"
validation="SHA 1"/>
Any ideas?
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