Skip to main content

Problems and solutions

This week has been lined with clumsiness, weird problems and some pride. The latter because I actually managed to conquer the problems.

The clumsiness was just me managing to shut myself out from my computer. All accounts except the domain accounts were disabled, the domain cache was disabled and network settings not allowing contact with the domain. That is not a good combination. Thanks to Offline NT Password & Registry Editor I got in again just fine. The reason this all happened was mainly a security aspect, but combined with the poor network settings it turned out to be way too secure.

The weird problems had to with our Windows CE application. As usual the information supplied from the users is very limited, like "it doesn't work". But when I finally got my hands on the log files I got even more confused. Weird problems in the shape of SqlCeExceptions, no GPRS connection, sudden torn-offs... It turned out to be a memory card that was loose. The database is stored on that memory card, so the problems were all a product of this.

Everything is now back to normal and I can proudly continue my work a couple of experiences richer.
Labels:

Comments

Post a Comment

Popular posts from this blog

User.Identity returns old login name after name change

When a person gets married or makes a name change for some other reason this usually means that the login name for the Active Directory-account changes as well. This is rarely a problem, but it turned out to cause some issues on our web server, where the  User.Identity  property was still returning the old login name. The user logged on with the new login name, but was identified by the web application as the old login name. The reason this occurs is because the  User.Identity  property relies on the  LsaLookupSids  method to convert the user SID to a login name. The method first calls the local  LSA-cache , which is not synchronized with the Active Directory. For this purpose a simple reboot of the web server to clear the  LSA-cache  propably would have sufficed. But since we didn't want to take the application offline rebooting was not an option. Instead, it is possible to set the registry value  LsaLookupCacheMaxSize in HKLM\SYSTEM\CurrentControlSet\Control\Lsa. If this val
Post a Comment
Read more

Binding Enum with DescriptionAttribute in WPF

Binding an enumeration to a ComboBox can be done in several ways. In most cases you don't want to display the value itself, but a more user friendly description. One common approach is to use the DescriptionAttribute on the Enum values to supply a description for each value.  This is all possible in a very MVVM friendly way. First step is to add the  DescriptionAttribute  to the values of the enumeration. public enum MyValues { [Description("First value")] First, [Description("Second value")] Second } To retrieve the description from the enum we use a simple extension method. This method returns the value of the DescriptionAttribute if it exists, otherwise the string representation of the enum value is returned. public static string GetDescription(this Enum value) { var fieldInfo = value.GetType().GetField(value.ToString()); var attribute = fieldInfo.GetCustomAttributes(typeof(DescriptionAttribute), false).FirstOrDefault() as
2 comments
Read more

Programming AD with C#.NET – part 4

Our transition to the  System.DirectoryServices.Protocols  has in the whole gone very smooth, but there have been some issues with one environment that contains subdomains. Most things are working fine, but writing to a subdomain does not work in the same way as it did before. What is generally bad with the  System.DirectoryServices.Protocols is the documentation, which is practically non-existent. But most things can  be figured out anyway since most classes just are wrappers for the wldap32.dll, which in turn is way better documented. I would like to have as little bindings to a specific server as possible but still be able to access the domain. In the  LdapConnection  it is possible to set the identifier to null and use the executing computer as a starting point to find a domain controller. But sometimes I must know that I am using a Global Catalog, and with more and more RODC in the environment I sometimes must know that I am working against a writeable domain controller.
Post a Comment
Read more