AjaxToolkit: TabContainer not visible after setting TabPanel.Visible = false

After upgrading AjaxToolkit I had the following weird problem: a TabContainer disappeared.

A short investigation showed that it was cause because I was setting a TabPanel property
tabPanel.Visible = false

Bottom line: If you set the ActiveTab of the TabContainer to Visible=false => the TabContainer will not be drawn. I'm not sure if it's a bug or a feature.

Resolution: Change the ActiveTab when you set TabPanel.Visible = false

Error 2869 during installation

The problem:
Error message during installation on Windows Vista / 7:
The installer encountered an unexpected error installing this package. This may indicate a problem with the package. The error code is 2869.

Reason:
The MSI contains a custom action that require more privileges than the current user have.
Due to UAC (user access control) even if you're administrator, you're not REALLY administrator unless specifically run as such.

Resolution:
- Simple option - Install as administrator.
- If you wrote the package in Visual Studio 2005/2008 add the following to require administrator privileges to begin installation:
1. Right click on the setup project -> View -> Launch Conditions
2. In the Launch conditions window, right-click the node "Launch Conditions" and select "Add launch condition".
3. Rename the new launch condition to something like "Require Administrator".
4. In the new launch condition property window set "Condition" to "AdminUser"
5. Set the error message to something meaningful ("Only administrator can install this software").
6. Check the following post & add "NoImpersonate.js"
7. Rebuild the package.

MAPIInitialize fails with code 0x80010106 in C#

I've tried to use MAPI in C# but MAPIInitialize keeped on failing with error code: 0x80010106.

The clue I found only is that this error code is related to multi-threading.
The answer was simple - set the application attribute:
[STAThread]

WinSNMP C# wrapper fails in 64 bit systems

Some time ago I wrote a C# wrapper for WinSNMP. Recently I moved to Win7 64 bit and that application failed to run. I thought it's because of Win32 API change, but it seems like the issue was with 32 bit vs. 64 bit.

Solution: (work-around) compile the application to x32:
Right click the project -> Build -> Platform Target -> x86

It could be that I did something wrong in the wrapper, but I really don't have the time to check it out.

Convert SQL Server Database to Access MDB

I tried looking around the web how to accomplish the following task:
Convert SQL Server Database to Access MDB

I couldn't find any answer online, but on the way to work it hit me: use SQL Server Management Studio "Export". I just checked it and it works like a charm. In 2 minutes I was able to export the SQL Server database to Access MDB.

Just do:
1. Open SQL Server Management Studio & connect to the SQL Server database.
2. Right click the database and select - "Tasks" => "Export"
3. Select the source database & select Access MDB as destination.
Continue with the instructions.

TFS Error: HTTP code 403: TF53011: DOMAIN\USER is not a licensed user.

While adding a new user to the TFS I got the following error:
HTTP code 403: TF53011: DOMAIN\USER is not a licensed user.

There are many talks in the web, but the solution might be VERY simple (it was in my case):
Add the new user to the TFS group "Team Foundation Licensed Users Group":
- In the 'Team Explorer', right click on the TFS Server -> Team Project Settings -> Group Membership
- Add the new user to the following group:
[SERVER]\Team Foundation Licensed Users Group

Scheduled Task fails: Could not start

I just got a new machine for a customer and started to set it up. I've defined multiple scheduled tasks, and I got: "Could not start" error for one of the tasks... That specific task was a batch job.

I've found few resources on the web and solved the problem. I would recommend the following protocol for such an error:
*. Check the log file of the scheduled tasks: open the scheduled tasks in explorer window and select "Advanced"->"View Log".

Option 1:
*. Check the following policy: Control Panel|Admin Tools|Local Security Policy\Local Policies\User Rights Assignments "Log on as a batch job" (also - someone wrote that his problem was that there was a group policy overriding the local computer policy).

Option 2:
If the error is:
0x80070005: Access is denied.
Try using the Task page Browse button to locate the application.

Try resolving it using the protocol defined here:
*. Check the user you are trying to run as can run the script:
---- Start - Run - RunAs /user:username@domain (Your Command)
*. If it doesn't run, try giving the user privileges:
Cacls c:\windows\system32\cmd.exe /e /g username@domain:r