This behavior occurs because a null pointer is returned when you use an Adobe Type 1 font that contains a data structure that is not valid. A null pointer may be returned with valid fonts, but in such cases the computer is under high stress. The high stress causes a synchronization problem between the asynchronous transfer mode (ATM) font cache and the current thread that is trying to access a font that has been removed from the cache.
After you install the update, the Adobe Font Manager may not load a font that is corrupted or has a data structure that is not valid. When you use the built-in font manager to preview a font that you think may be corrupted, you may receive the following error message when you try to preview the font:
Error: The requested file c:\winnt\Fonts\Font Name. PFM|c:\winnt\Fonts\Font Name. PFB was not a valid font file.
Service Pack Information
To resolve this problem, obtain the latest service pack for Microsoft Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
260910 How to Obtain the Latest Windows 2000 Service Pack
A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem.
If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, submit a request to Microsoft Customer Service and Support to obtain the hotfix.
Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:
Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language. The English version of this fix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Microsoft Windows 2000 Service Pack 4.
This hotfix restricts some Adobe Type 1 fonts with an incorrect data structure. However, you may still experience the problem when you use Adobe Type 1 fonts after you apply this hotfix or after you install Windows 2000 Service Pack 4. If you still experience the problem, contact Adobe to update these Type 1 fonts.
The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.
For additional information about how to obtain a hotfix for Windows 2000 Datacenter Server, click the article number below to view the article in the Microsoft Knowledge Base:
265173 The Datacenter Program and Windows 2000 Datacenter Server Product
For additional information about how to install multiple hotfixes with only one restart, click the article number below to view the article in the Microsoft Knowledge Base:
296861 Use QChain.exe to Install Multiple Hotfixes with One Reboot