In Microsoft Internet Explorer 6 or in Windows Internet Explorer 8, the OnChange event in a field does not occur if the following conditions are true:

• You create a Web form that has an <INPUT> field or a <TEXTAREA> field.
• You create an OnChange event in the <INPUT> field or in the <TEXTAREA> field.
• You change the "ß" character to "ss" characters, or you change "ss" characters to the "ß" character, in the <INPUT> field or in the <TEXTAREA> field.

This problem occurs because the string comparison of the MSHTML engine is based on the CompareString API. The CompareString API considers "ss" characters and the "ß" character to be the same character.

Security update information

To resolve this problem, install the most recent cumulative security update for Internet Explorer. To install the most recent updates, visit the following Microsoft website:
  For more technical information about the most recent cumulative security update for Internet Explorer, visit the following Microsoft website: 
Note The update for Internet Explorer 8 was first included in security update 2416400 (MS10-090). For more information, click the following article number to view the article in the Microsoft Knowledge Base:The update for Internet Explorer 6 was first included in security update 928090 (MS07-016). For more information, click the following article number to view the article in the Microsoft Knowledge Base:

Service pack information

To resolve this problem in Internet Explorer 6 for Windows Server 2003, obtain the latest service pack for Windows Server 2003. For more information, click the following article number to view the article in the Microsoft Knowledge Base: To resolve this problem in Internet Explorer 6 for Windows XP, obtain the latest service pack for Windows Server XP. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

Registry information

After you the update for Internet Explorer 6 on Windows Server 2003, you must modify the registry to enable this update.

Note To enable this update for other versions of Internet Explorer, you do not have to make any changes to the registry.

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:

Registry settings for a specific user

To enable this update for a specific user in Windows Server 2003, use one of the following methods.

Method 1

1. Click Start, click Run, type regedit, and then click OK.
2. Locate and then click the following registry key:
   HKEY_CURRENT_USER\SOFTWARE\Policies\Microsoft\Internet Explorer\Main\FeatureControl
3. On the Edit menu, point to New, and then click Key.
4. Type the following key name, and then press ENTER:
   FEATURE_INTRINSICS_USE_BINARY_COMPARE_KB925683
5. On the Edit menu, point to New, and then click String Value.
6. Type *, and then press ENTER.
7. On the Edit menu, click Modify.
8. Type 1, and then click OK.

Method 2

1. Click Start, click Run, type regedit, and then click OK.
2. Locate and then click the following registry key:
   HKEY_CURRENT_USER\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl
3. On the Edit menu, point to New, and then click Key.
4. Type the following key name, and then press ENTER:
   FEATURE_INTRINSICS_USE_BINARY_COMPARE_KB925683
5. On the Edit menu, point to New, and then click DWORD Value.
6. Type *, and then press ENTER.
7. On the Edit menu, click Modify.
8. Type 1, and then click OK.

Registry settings for all users

To enable this update for all users in Windows Server 2003, use one of the following methods.

Method 1

1. Click Start, click Run, type regedit, and then click OK.
2. Locate and then click the following registry key:
   HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Internet Explorer\Main\FeatureControl
3. On the Edit menu, point to New, and then click Key.
4. Type the following key name, and then press ENTER:
   FEATURE_INTRINSICS_USE_BINARY_COMPARE_KB925683
5. On the Edit menu, point to New, and then click String Value.
6. Type *, and then press ENTER.
7. On the Edit menu, click Modify.
8. Type 1, and then click OK.

Method 2

1. Click Start, click Run, type regedit, and then click OK.
2. Locate and then click the following registry key:
   HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl
3. On the Edit menu, point to New, and then click Key.
4. Type the following key name, and then press ENTER:
   FEATURE_INTRINSICS_USE_BINARY_COMPARE_KB925683
5. On the Edit menu, point to New, and then click DWORD Value.
6. Type *, and then press ENTER.
7. On the Edit menu, click Modify.
8. Type 1, and then click OK.

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base: