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Collector for Arcgis: The Server you are trying to connect cannot be verified

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I have setup an on-premise Arcgis server 10.4.1 which has been used for field data collection. Surprisingly over the last week, I did a minimum update on the server and I persistently get a dialog stating "The Server you are trying to connect to cannot be verified". The service has been restarted multiple times but get same error. Features cannot be accessed on the collector application anymore. An urgent help is really needed.

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JasonCiak

I'm experiencing the same issue and it is becoming a bigger and bigger issue and appears to be having something to do with some type of caching. Some devices can open the map correctly and some cannot, and making updates to maps seems to cause problems with the new layers.

Using SSL but it is properly configured. This seemed to happen starting mid day on October 20th.

JasonCiak

The same maps also load properly in Explorer for ArcGIS - it is just collector that is erroring.

PeteCrosier

Are the (Android?) devices having problems the ones that have updated to Collector 17.0.3 which was released on October 18th? This seems to be the case here. I think all our field users are on an older version (10.4?) of Collector to mitigate other changes which have happened in the past and changed things that aren't compatible with how they work so this hasn't affected them yet.

MiaogengZhang

Can you check if the certificate for SSL is valid? Since 17.0.3/17.0.4 release, the change was made to not allow self-signed/untrusted certs due to security concerns that could expose customers to various type of attacks.

JasonCiak

They are Android GPS units(4.2.2), and also my Galaxy Note 8(7.1.1). I also tried downgrading them to 17.0.2 and I could have swore that the first time I opened the map up on the one GPS unit it loaded properly and then I went to refresh it and it's doing the same thing - except this time since it's 17.0.2 it allows me to click the "Yes" I'm sure even though you cannot verify my certificate.

I called ESRI and they suggested installing the certificate on my devices as well - tried that to no avail.

I'm adding my services directly to a map with ArcGIS Online and using the :6443 in the URL of the REST endpoint - this is correct, yes? It's worked all along. When I view the REST endpoints URL in Firefox the Green lock icon appears in the address bar so I believe the SSL is configured properly, but maybe Collector doesn't like the :6443 port reference?

Any help or suggestions greatly appreciated.

MiaogengZhang

We just published a technical article about this: Problem: Unable to log into ArcGIS Enterprise portal with Collector for ArcGIS when using a self-signed certificate

SiCasley

We are experiencing the same issue - has there been any progress on this? I can confirm we are using Collector for Android v17.0.4 on a variety of devices. All our (ArcGIS Server) services are secured, and we don't get the authentication popup on any of our maps. Our server certificate is CA signed and shows as trusted in Chrome on the Android devices. Are there any workarounds?

JasonCiak

Our solution/workaround as suggested by ESRI was to manually load the SSL certificate onto the Android device. This can be done by creating a .cer file of your SSL certificate and then loading it onto the Android device by opening and registering the cert on each device you are using. Kind of lame but it worked in our instance. You can use the first paragraph from the article below in order to create the .cer file. I then transferred that to the device via thumb drive and when you open the file on the Android device it asks for name to register it on the device.

Manually Install SSL Certificate in Android Jelly Bean | Guy Rutenberg

"The first step is to export the certificate as a DER encoded X.509 certificate. This can be done using Firefox (on a PC) by clicking on the SSL’s lock sign in the address bar, More Information -> View Certificate -> Details -> Export. The exported certificate needs to be saved on the root directory of the internal storage of the phone, with *.cer extension (or *.crt). Other extensions will not work."

SiCasley

Thanks for the suggestion Jason - unfortunately installing the certificate on the device made no difference and we still get the message "The server you are trying to connect to cannot be verified" when opening the map in Collector and none of the layers load.

Seems to be an issue with the way ArcGIS Server (10.3.1 on Windows) is sending out the certificate (with an incomplete chain). The same certificate is used without any issues on one of our other (mail) servers.

GISSupport3

This site MAY assist:

SSL Checker - SSL Certificate Verify

RayGreen

Were you ever able to resolve this issue? I know it is a while back, but we are still having this problem on android systems.

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