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
Windows 2003 Small Business Server SP2
What to do
- Stop the installation
- Re-run the installer Pmex_30sfx.exe - the installation should now complete
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.