The Adobe Acrobat Reader 4.0 program attempts to write to these registry keys when it starts and generates an error message if it is unable to do so. These registry keys are not generally "writeable" in a secured environment.
To resolve this issue, grant all users the "Set Value" permission:
WARNING: Granting all users the "Set Value" permission on a shared registry key may not be permitted by your system administrator, and/or your local security policies. Because of this, please use caution when you use the following procedure.
Log on to your computer as an administrator.
Use Regedt32.exe to view the following registry keys:
Grant all users (everyone) the "Set Value" permission on each of these shared registry keys.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.
The third-party products that are discussed in this article are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.