To run System File Checker in Windows, please click on Start and type in CMD in the search box, then right-click on the cmd result that comes up above, and select 'Run as administrator'.
Now type in the following command at the prompt:
Once the scanning process has been completed, restart and check if this makes any difference to your issue with the Windows Installer.
Keep me posted.
Have run sfc/scannow. The process indicated that it hadn't found any corrupted files. As advised I restarted the PC. I have tried to install two programmes that both indicated that there was a problem with Windows Installer. Both have not completed their installation due to installer problems.
Would a virus cause this sort of problem?
I got into msiserver but can't find a line containing "wow64". There are a three entries that have nominal values of (1).
Sorry, but daredn't start crashing about at this point!
Service sydword regdword
erroe control re dword
We're making progress. I now remember why I deleted Windows Installer (I think it worked on my memory, too!).
One update went in without any problem. On attempting to install AVG2012, one of the programmes that threw up the error message, this reverted to the initial problem that I had been trying to sort out i.e. the "break-in" advice of the PC trying to download Windows Media Gallery. This initialises progresses and then starts again. I keep having to stop it again and again.
However, on trying to install AVG2012, this time, it advised that it couldn't install it as "another programme is being downloaded" this was what led me to delete Windows Installer!
I have to congratulate you on getting me back to the original problem which I hope we can now solve!
Many thanks for your help.
What do i need to do about your charges for help todate (which must have been rather more far-reaching than it may have seemed)?
AVG2012 installed faultlessly.
I think you've cured the problem.
Many thanks, again.