Microsoft KB Archive/252743

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Knowledge Base

Article ID: 252743

Article Last Modified on 8/4/2005


  • Microsoft Access 2000 Standard Edition

This article was previously published under Q252743

Moderate: Requires basic macro, coding, and interoperability skills.

This article applies to a Microsoft Access database (.mdb) and to a Microsoft Access project (.adp).


When you open a data access page created with the original version of Microsoft Access 2000 that contains the Calendar control, you may see one of the following warnings:

Do you want to install and run "http://server/mscal.ocx"?

The publisher cannot be determined due to the problems below:
Authenticode signature not found.


Your current security settings prohibit running ActiveX controls on this page. As a result, the page may not display correctly.


The version of the Calendar control (Mscal.ocx) in Microsoft Access 2000 is unsigned.


To resolve this problem, obtain Microsoft Office 2000 Service Release 1/1a (SR-1/SR-1a).

To obtain SR-1/SR-1a, click the article number below to view the article in the Microsoft Knowledge Base:

245025 OFF2000: How to Obtain and Install Microsoft Office 2000 Service Release 1/1a (SR-1/SR-1a)

To temporarily work around this problem, you can download the signed version of the file from the following location:

Replace any existing unsigned copies of the file with the newly downloaded file.


Microsoft has confirmed that this is a problem in Microsoft Access 2000. This problem was corrected in Microsoft Office 2000 SR-1/SR-1a.


In order to determine whether the copy of Mscal.ocx on your system is signed, follow these steps:

  1. On the Start menu, point to Find, and then click Files or Folders.
  2. In the Named box, type mscal.ocx.
  3. Click Find Now.
  4. In the displayed list of files found, right-click on any copy of Mscal.ocx, and then click Properties. If it is a signed version of the file, there are three tabs displayed: General, Version, and Digital Signatures. An unsigned file does not display the third tab, Digital Signatures.

NOTE: If you find more than one file, check the properties of each one.


For additional information about digital signatures and security, click the article number below to view the article in the Microsoft Knowledge Base:

206637 OFF2000: Overview of Digital Certificates

Additional query words: pra

Keywords: kbbug KB252743