PureMessage for Microsoft Exchange: installation fails with an error

  • Article ID: 33405
  • Updated: 19 Aug 2008

When upgrading from PureMessage 3.0 to 3.0.1 the installation fails with the error message:

Setup was unable to acquire the updating synchronizer Error details: COM error-code 0x80004005 : Unspecified error

Sophos product and version
PureMessage for Microsoft Exchange, version 3.0.1

Operating systems
Windows 2003 Small Business Server SP2
Windows 2003
Windows XP

What to do

  1. Stop the installation
  2. Re-run the installer Pmex_30sfx.exe - the installation should now complete

Technical information
This error may be caused because the spam rules setup.dll (running as system account) acquires the Mutex that is used to synchronise updating and installer so that they don't interfere with each other.

If the installer runs during a spam rules update, it cannot open the Mutex because of new Windows 2003 security restrictions.

This error is seen only on Windows 2003, and Windows XP, but not Windows 2000.

If you need more information or guidance, then please contact technical support.

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