RMI server fails on a few PCs, works on others

I have a small RMI server, started on various PC, to which a UNIX server connects to send them messages.
On each PC I have :
- An RMI registry.
- A Java RMI server, ready to receive messages from the UNIX machine.
All the PC are running Win NT 4 SP6, and the JRE 1.3.1.
On some PC, when the RMI server receives a RMI call from the UNIX machine, I get this error on the UNIX side :
java.rmi.UnmarshalException: Error unmarshaling return; nested exception is:
java.io.InvalidClassException: pop2PcServer_Stub; Local class not compat
ible: stream classdesc serialVersionUID=2 local class serialVersionUID=385818717
3882730883
at sun.rmi.registry.RegistryImpl_Stub.lookup(RegistryImpl_Stub.java:107)
at java.rmi.Naming.lookup(Naming.java:60)
at pop2Pc.main(pop2Pc.java:41)
It happens every time when these specific PCs are involved.
I tried everything : the programs don't use a security manager, the PC part starts the registry itself (instead of relying on a separate rmiregistry process). Whatever I do. I can't make the RMI process work correctly on these PC.
I really don'ty understand, because my program is identical in every case.

Unfortunately, this is already the case. The classe have been all compiled on the Unix server, and every time they are all bundled in a jar file which is on every PC the same.
On all the PC I also bundle the JRE 1.3.1 in a subdirectory of my program. With the PATH and CLASSPATH variables I directly point to it, as well as to the jar file.

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WHY CAN'T I GET MY MAIL, I GET A MESSAGE 'CONNECTION TO SERVER FAILED" BUT I CAN GET ON ALL OTHER WEB SITES. IT WORKED FINE UNTIL ABOUT A MONTH AGO. I CANCELLED MY ACCOUNT, PUT MY INFO IN AGAIN AND STILL GET THE MESSAGE "CONNECTION TO SERVER FAILED" HELP PLEASE!

have you tried removing and readding the e-mail account? sometimes settings get corrupted or changed on the server end...something computers can sometimes handle better than the mail interface.

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Hi, my mail applicatin is not working properly. It says cannot get main...the connection to the server failed but everything else is working ok. How can I solve this problem?

The connectivity test indicated that there was a problem with the user's ActiveSync folder, typically fixed by checking the box "Allow inheritable permissions ...".
Since it already was checked and even by removing the inherited permissions and then re-inheriting them didn't do the trick, I ended up just deleting the whole thing and then made a new duplicate account and blank mailbox. That was pretty drastic
but it fixed the problem. After restoring his mailbox contents from backup, the user is now a happy camper.
The connectivity test tool was helpful because the external URL was blank so I filled in the URL. But ActiveSync was working fine for everybody without the URL before although I don't know why it did work without it.
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MySQL Connection in RMI Server failed

I have a problem with connecting to hosts in RMI and i reckon the problem's with the policy file, but I can't get it right. Here's the error I got when I was running the program:
Exception.getMessage()
Unable to connect to any hosts due to exception: java.security.AccessControlException: access denied (java.util.PropertyPermission file.encoding read)
I need my RMI server to connect to port 3316 on the same machine, so that it can listen to clients requesting for data, and connect to the database on localhost:3316 to retrieve the relevant data from the MySQL database.
The contents of my policy are:
grant {
permission java.net.SocketPermission "*:1024-65535",
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Yo I got it to run. Just in case anyone might need it, I've changed the policy to:
grant {
permission java.net.SocketPermission "*:1024-65535",
"connect,accept";
permission java.util.PropertyPermission "file.encoding",
"read";
and it works. hope anyone that runs into this problem gets help ^^

Printer GPOs fail on some computers but work on others - error code 0x80070034

Hello, I have a couple of GPOs that roll our printers. They have been running smoothly for quite some time, then suddenly started giving our errors on our newer machines. Meaning, the GPOs will work fine on some clients but will not work on others. Also
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I turned every stone I could think of on the problematic machines but cannot find out a reason. I disabled anti-virus/firewall, I logged in as domain admin and I tried both user & computer GPOs. No luck. Notice that I can successfully connect manually
to the Printer shares (the ones used to distribute the drivers).
Domain is Win2008 R2. The printers "live" on a Win2012 machine and the drivers come from there. I am using Group Policy Preferences. Ideas are welcome.
Thanks
Christos

Hello and thanks for the suggestion. Yes the drivers are okay, all clients (working and not) run the same Win 7 x64. Let me summarize the situation:
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- The Printer Shares (that distribute the drivers) are accessible because the printer is installed without any problems/warnings if I manually double click on them (the shares)
- Security prompts for driver installs are disabled
I also noticed the following. The error says "The computer '123.123.123.123' preference item in the Group Policy object ... etc" The IP mentioned in that error is NOT the computer/client running the GPO but the IP address of the target printer.
So the client thinks the Printer already exists or the IP is already taken (or something of that sort).
Here is the GPresult XML for this
<GPO>
<Name>Printers - deploy - user</Name>
<Path>
<Identifier xmlns="http://www.microsoft.com/GroupPolicy/Types">{5C21
1010-F5E0-445C-99F3-0B8A9D9CB680}</Identifier>
<Domain xmlns="http://www.microsoft.com/GroupPolicy/Types">mydomain.com</Domain>
</Path>
<VersionDirectory>34</VersionDirectory>
<VersionSysvol>34</VersionSysvol>
<Enabled>true</Enabled>
<FilterId>MSFT_SomFilter.ID="{6272C5C1-9C4E-40B7-BD5A-277ED70B337D}",Domain="mydomain.com"</FilterId>
<FilterName>Any Win Desktop OS</FilterName>
<IsValid>true</IsValid>
<FilterAllowed>true</FilterAllowed>
<AccessDenied>false</AccessDenied>
<Link>
<SOMPath>mydomain.com/Configuration/Sites/MainOffice</SOMPath>
<SOMOrder>3</SOMOrder>
<AppliedOrder>1</AppliedOrder>
<LinkOrder>4</LinkOrder>
<Enabled>true</Enabled>
<NoOverride>false</NoOverride>
</Link>
</GPO>

Internet not working - wifi connected but internet and server fail, ethernet cable doesn't work either

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Hi ehamzic1,
Welcome to the Apple Support Communities!
I understand how frustrating it can be when your computer cannot connect to the internet. In your situation, you will need to isolate to find what is causing the issues connecting. I would recommend reading over and working through the attached article. The article should help you troubleshoot and resolve this situation.
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http://support.apple.com/kb/HT1714
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Query fails in BI Pub but works in other interfaces

I have a query that fails in BI Publisher with an 'ORA-00920: invalid relational operator' error but I drop the same query in toad and it works fine. I don't see an error but when one tool tells me something works and another tells me it doesn't, I tend to believe the one that works. There is a case statement in the where clause that seems to be the problem (see below). If I comment it out the query works in BI Pub. The case statement WORKS in Toad. I don't know how to troubleshoot a 'non-error' to make it work in in BI Publisher. Could it be a Toad thing?
where
o.orgpoint_nm in (:p_orgpoint_nm) and
i.inventory_status_desc in (:p_inventory_status) and
i.version_num in (:p_inventory_version) and
(case
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then 1
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You could use the Word Page break and see if that works better..
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Webster, TX

RMI Server on MultiHome machine

Dear all,
I have a machine with two network interfaces (two IP addresses) , one IP address is "192.168.69.1" other is "192.168.70.1"(hostname is bind to this IP) , I am invoking this server's methods remotly using Client application that is running on "192.168.69.14", from the client machine only "192.168.69.1" is accessible and i have no access to IP "192.168.70.1".
When i start rmi registry via rmiregistry command without giving any port number then program works fine.
import java.rmi.registry.Registry;
import java.rmi.registry.LocateRegistry;
import java.rmi.RemoteException;
import java.rmi.server.UnicastRemoteObject;
public class Server implements Hello {
    public Server() {}
    public String sayHello() {
        return "Hello, world!";
    public static void main(String args[]) {
        try {
             //RMI hostname
          System.setProperty("java.rmi.server.hostname", "192.168.69.1");
             Server obj = new Server();
             Hello stub = (Hello) UnicastRemoteObject.exportObject(obj,0);
             //Bind the remote object's stub in the registry
             Registry registry = LocateRegistry.getRegistry();
             registry.bind("Hello", stub);
             System.err.println("Server ready");
         } catch (Exception e) {
             System.err.println("Server exception: " + e.toString());
             e.printStackTrace();
}Client.java
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;
public class Client {
    private Client() {}
    public static void main(String[] args) {
        String host = (args.length < 1) ? null : args[0];
        try {
            Registry registry = LocateRegistry.getRegistry(host);
            Hello stub = (Hello) registry.lookup("Hello");
            String response = stub.sayHello();
            System.out.println("response: " + response);
        } catch (Exception e) {
            System.err.println("Client exception: " + e.toString());
            e.printStackTrace();
}Whenever i start rmiregistry on some specified port e.g. rmiregistry 6655 , and uses the server version that access the rmiregistry from specified port like blow
import java.rmi.registry.Registry;
import java.rmi.registry.LocateRegistry;
import java.rmi.RemoteException;
import java.rmi.server.UnicastRemoteObject;
public class Server implements Hello {
    public Server() {}
    public String sayHello() {
        return "Hello, world!";
    public static void main(String args[]) {
        try {
             //RMI hostname
          System.setProperty("java.rmi.server.hostname", "192.168.69.1");
             Server obj = new Server();
             Hello stub = (Hello) UnicastRemoteObject.exportObject(obj,0);
             //Bind the remote object's stub in the registry
             Registry registry = LocateRegistry.getRegistry(6655);
             registry.bind("Hello", stub);
             System.err.println("Server ready");
         } catch (Exception e) {
             System.err.println("Server exception: " + e.toString());
             e.printStackTrace();
}My Client application is unable to invoke remote Object
I got following exception
$ java Client 192.168.69.1
Client exception: java.rmi.ConnectException: Connection refused to host: 192.168.69.1; nested exception is:
        java.net.ConnectException: Connection refused
java.rmi.ConnectException: Connection refused to host: 192.168.69.1; nested exception is:
        java.net.ConnectException: Connection refused
        at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:574)
        at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:185)
        at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:171)
        at sun.rmi.server.UnicastRef.newCall(UnicastRef.java:306)
        at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
        at Client.main(Client.java:15)
Caused by: java.net.ConnectException: Connection refused
        at java.net.PlainSocketImpl.socketConnect(Native Method)
        at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
        at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
        at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
        at java.net.Socket.connect(Socket.java:516)
        at java.net.Socket.connect(Socket.java:466)
        at java.net.Socket.<init>(Socket.java:366)
        at java.net.Socket.<init>(Socket.java:179)
        at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirectSocketFactory.java:22)
        at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMasterSocketFactory.java:128)
        at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:569)
        ... 5 moreKindly someone have idea to solve the problem ?
Thanks

did you try starting your rmiregistry with "-J-Djava.rmi.server.hostname=192.168.69.1" ?

How to resolve "Connection to LDAP server failed." error?

Hello,
I have installed Coldfusion8 on one of my server that was having ColdFusionMX earlier.
The ColdFusionMX admin settings are automatically transferred to the new Coldfusion8 admin page after installation.
Also I have configured all my websites at the time of installation.
After all when I am trying to login into one of my website system is throwing the below error.
"Connection to LDAP server failed."
Prevously it was working well with coldfusionMX. After installed Coldfusion8 I am facing this problem.
Is there anything to do more with cf admin settings page or is this problem is with the code? (Infact I havent modified my cfm code)
Please find the piece of code that I am using.
<cfldap action="QUERY" server="#application.LDAPServer#" port="#application.LDAPPort#" start="#application.LDAPBase#" name="search" attributes="alias, dn, uid, technicalCareerLevel, locationorgunit, givenName, sn" filter="#filter#" scope="SUBTREE" maxRows="2">
Anybody can assist me on this?
Thanks in advance.
Manoz.

I have fixed this problem successfully.
The problem was with the referral attribute of the cfldap tag.
After adding this (referral="yes") attribute to my code I am able to login into my website.
<cfldap action="QUERY" server="#application.LDAPServer#" port="#application.LDAPPort#" start="#application.LDAPBase#" name="search" attributes="alias, dn, uid, technicalCareerLevel, locationorgunit, givenName, sn" filter="#filter#" scope="SUBTREE" maxRows="2" referral="yes">
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TS2621 connection to the server failed

Hi, I'm having problems accessing my email account through my iPad 4. It was working just yesterday and now when I try to see if I have mail it says that the connection to the server failed. My WiFi is working just fine I can access the Internet on the iPad and and I can access my email through the computer just not on the iPad please help!

iOS: Unable to send or receive email
http://support.apple.com/kb/TS3899
Can’t Send Emails on iPad – Troubleshooting Steps
http://ipadhelp.com/ipad-help/ipad-cant-send-emails-troubleshooting-steps/
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http://www.apple.com/support/ipad/assistant/mail/
iPad Mail
http://www.apple.com/support/ipad/mail/
Try this first - Reset the iPad by holding down on the Sleep and Home buttons at the same time for about 10-15 seconds until the Apple Logo appears - ignore the red slider - let go of the buttons. (This is equivalent to rebooting your computer.)
Or this - Delete the account in Mail and then set it up again. Settings->Mail, Contacts, Calendars -> Accounts Tap on the Account, then on the red button that says Remove Account.
 Cheers, Tom

HT4061 Cannot get mail The connection to the server failed.

This is the message I get when I try to get mail.
Cannot get mail The connection to the server failed.

Talk to your email provider.

My MBA indicates my connection is timing out. My wifi on other laptops work in the house. Diagnostics indicate wifi settings failed, network settings failed, ISP failed, Internet failed, and server failed. What can I do?

My MBA indicates my connection is timing out. My wifi on other laptops work in the house. Diagnostics indicate wifi settings failed, network settings failed, ISP failed, Internet failed, and server failed. What can I do?

Take each of the following steps that you haven't already tried, until the problem is resolved. Some of these steps are only possible if you have control over the wireless router.
Step 1
Turn Wi-Fi off and back on.
Step 2
Restart the router and the computer. Many problems are solved that way.
Step 3
Change the name of the wireless network, if applicable, to eliminate any characters other than letters and digits. You do that on your router via its web page, if it's not an Apple device, or via AirPort Utility, if it is an Apple device.
Step 4
Run the Network Diagnostics assistant.
Step 5
In OS X 10.8.4 or later, run Wireless Diagnostics and fix the issues listed in the Summary, if any.
Step 6
Back up all data.
Launch the Keychain Access application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Keychain Access in the icon grid.
Enter the name of your wireless network in the search box. You should have one or more "AirPort network password" items with that name. Make a note of the name and password, then delete all the items. Quit Keychain Access. Turn Wi-Fi off and then back on. Reconnect to the network.
Step 7
You may need to change other settings on the router. See the guidelines linked below:
Recommended settings for Wi-Fi routers and access points
Potential sources of interference
Step 8
Make a note of all your settings for Wi-Fi in the Network preference pane, then delete the connection from the connection list and recreate it with the same settings. You do this by clicking the plus-sign icon below the connection list, and selecting Wi-Fi as the interface in the sheet that opens. Select Join other network from the Network Name menu, then select your network. Enter the password when prompted and save it in the keychain.
Step 9
Reset the System Management Controller (SMC).

I am having a problem accessing my Yahoo email account. It keeps saying, cannot get mail, the connection to the server failed. Then I put my email in settings and it works but this happens constantly. Anyone having this problem?

My Yahoo email asks me daily for my email password or says the connection to the server failed. Is anyone having this problem currently? I noticed old messages in chat mentioned the same problem. I get into my Yahoo email fine on my desktop computer for several weeks without re entering a password. But the IPad does not seem to be connecting daily with Yahoo without putting a password in again.

So, I didn't change anything and now it is working better. I still get the odd error though.
I have a feeling this has something to do with the SSL update Apple released and it was their server side.

ITunes sync stopped working with my iPhone 5 and Outlook on Windows 7. Error states in part "because the sync server failed to sync the iphone"

I have an iPhone 5 running iOS 7.1.2. I am using iTunes version 11.2.2.3 on Windows 7. After updating to the new version of iTunes I am currently using, the snyc between my Outlook calendar and phone stopped working. I get the error "iTunes could not sync the calendars to the phone xxxxx because the sync server failed to sync the iphone" I followed the instructions here - Troubleshooting Sync Services on Windows with Microsoft Outlook 2003, Outlook 2007, or Outlook 2010 - to no avail, with the exception of not re-installing Outlook. Not an option on my corporate computer. When I run the Sync test, it says it passes -
Microsoft Windows 7 Enterprise Edition Service Pack 1 (Build 7601)
LENOVO 4384AJ9
iTunes 11.2.2.3
QuickTime 7.7.5
FairPlay 2.6.12
Apple Application Support 3.0.3
iPod Updater Library 11.1f5
CD Driver 2.2.3.0
CD Driver DLL 2.1.3.1
Apple Mobile Device 7.1.1.3
Apple Mobile Device Driver 1.64.0.0
Bonjour 3.0.0.10 (333.10)
Gracenote SDK 1.9.6.502
Gracenote MusicID 1.9.6.115
Gracenote Submit 1.9.6.143
Gracenote DSP 1.9.6.45
iTunes Serial Number xxxxxxxxxxx
Current user is not an administrator.
The current local date and time is 2014-07-09 21:39:02.
iTunes is not running in safe mode.
WebKit accelerated compositing is enabled.
HDCP is supported.
Core Media is supported.
Video Display Information
Intel Corporation, Intel(R) HD Graphics
**** External Plug-ins Information ****
No external plug-ins installed.
iPodService 11.2.2.3 is currently running.
iTunesHelper 11.2.2.3 is currently running.
Apple Mobile Device service 3.3.0.0 is currently running.
**** Device Sync Tests ****
Sync tests completed successfully.
Any ideas?

Try this
To resolve this issue, follow the steps in iPhone, iPad, iPod touch: Unknown error containing '0xE' when connecting. If you have a Windows computer with an Intel® 5 series/3400 series chipset, you may need updates for your chipset drivers. See iTunes for Windows: Issues syncing iOS devices with P55 and related Intel Chipsets for more information.

HT2480 Ipad mini - exchange email stopped working randomly Error: "Cannot get mail. The connection to the server failed."

I got an iPad mini over Christmas and have had no issues setting up/managing my email until yesterday. I've had my Exchange email working for almost a month, and yesterday I stopped getting emails and getting the error: "Cannot Get Mail. The connection to the server failed."
I tried resetting the device (multiple times) and deleting and recreating the Exchange account (multiple times). This is getting annoying because it worked fine up until yesterday. I'm not aware of any updates to the device, or any changes that have occurred since yesterday.

Due to a screen issue, I had my iPhone 5 replaced two days ago. I repeated deleted the mail account and kept adding it but this did not make any difference. When I attempted to setup the new phone with my Google (Gmail via exchange active sync) accounts I was receiving this same "Cannot Get Mail" error. From what I was able to gather, this problem should be affecting Gmail accounts set up via Exchange. When originally purchasing the phone I was assisted and directed to set up my Gmail account through Exchange because it had the ability to use "ActiveSync" and push not only mail and calendars, but all of my contacts as well. I found this article regarding the subject.
http://www.pcmag.com/article2/0,2817,2413283,00.asp
What it came down to was having to delete my Gmail via Exchange account and separate it into two different accounts, a regular gmail account for my mail and a CardDAV account for my contacts.
Here is what I did. Google is changing their system and for new registrars Exchange ActiveSync will not work so you will be unable to register your account via Exchange and have your mail, calenders, and contacts all pushed together. I find this change really annoying. If you are having problems accessing your contacts after deleting the mail account, like I was, here is the work around.
To circumvent this issue go to Setting > Mail, Contacts, Calendars > Add Account > Other > Add CardDAV Account: Under server ender google.com, then your email user name and password, then click next to verify the information.
I hope this helps.

RMI server fails on a few PCs, works on others

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