Doug Duthie
Premium
Doug, so if i try to install the software it tells me an older version is already installed. ive gone through the app download history and can by trying to install them find out ones that say a newer version is installed or and older one. the version that it thinks is installed is 1.5.17, when i try to reinstall that version it tells me "the configuration data for this product is corrupt"
Yes....Windows stores installation information in the registry and occasionally does get corrupt As far as I can tell, the main key used to determine if an app is installed is HKEY_CLASSES_ROOT\Installer\Products\. It looks like the ID for 1.5.17 is HKEY_CLASSES_ROOT\Installer\Products\F2FF782BEC3401146A4AF4D57101BD65. Check if this key is in the registry and what it contains.
If you find this key in the registry, export it (as a backup) and delete it. Open Add/Remove Programs to see if ACC Results Companion has gone.
If you can find the key, look through all the keys in HKEY_CLASSES_ROOT\Installer\Products (this will be laborious if you have lots of apps installed though). Look for any partially complete keys (they should all have roughly the same tags)
If that does not sort it you might need to try to fix the registry. Microsoft has a basic tool (https://support.microsoft.com/en-gb...the-windows-registry-checker-tool-scanreg-exe) to clean up the registry. There's also a number of 3rd party tools out there that might be a bit more thorough