Have you ever wondered why your favorite game from Windows 95 just doesn’t seem to run on Windows 7 but other applications do? Well we have the answer for you, as well as a few solutions for how to fix it.
Be sure to check out the previous articles in this Geek School series on Windows 7:
And stay tuned for the rest of the series, as we have many more articles over the next few weeks.
Why Do Applications Become Incompatible ?
One of the most common reasons is a Windows feature called Windows File Protection which first appeared in Windows Vista. Windows File Protection, as the name implies, protects core system files from being replaced. It does this by modifying the security ACL on the file to give only the TrustedInstaller user full access to the file, which ensures that only programs like Windows Updates can replace and edit the file. In Windows 7 the feature was renamed to Windows Resource Protection.
Security enhancements also play a big part in application incompatibility, most notoriously because of UAC (User Account Control), which did not exist in Windows prior to Vista. Similarly, the directory structure, most notably around User Profiles, changed in Windows Vista and broke many applications that were designed for the pre-longhorn area. To try and fix the situation they implemented symbolic links (sometimes called Junction Points in older versions of Windows) that redirected the old locations to the new ones.
Making Applications Compatible
Just because an application is incompatible with your operating system doesn’t mean you can’t coerce it to run. The first thing you will want to do is identify if an app is incompatible with Windows 7. To do this, open Control Panel and click on the Programs category. Here you will see a Run programs made for previous version of Windows hyperlink. Click on it.
Then expand advanced and deselect the option to automatically fix errors, then click next.
Now click browse and find the file you are trying to run, then click next.
When the scan is done, view the detailed information.
Here you will see the issues found. As you can see the messages aren’t always that helpful, but at least you now know your application is going to have trouble running.
Using Compatibility Mode
If the application you are trying to run was specifically designed for a previous version of Windows, you can try and mimic the older environment using compatibility mode. To do this, right click on the program you want to run and select properties from the context menu.
Then switch over to the compatibility tab.
Here you will be able to set the operating system environment. You can do this by selecting the checkbox and choosing the operating system from the drop down.
Using the Application Compatibility Toolkit
The full power of the Application Compatibility Toolkit is out of the scope of this article, but there is one tool that you need to know about. The Internet Explorer Compatibility Test Tool allows you to test your local intranet sites for compatibility with the up and coming release of Internet Explorer. To get started go ahead and launch it.
Then click on the enable button.
Now open Internet Explorer, and the first thing you will notice is a little clipboard in the status bar. If you click on it you will get a message box explaining that the browser is busy being used to evaluate compatibility. All you need to do is go about browsing your webpages as you normally would. Once you are done, close Internet Explorer.
Below you can see the issues the tool found with the webpages I browsed. You can now save the report and send it off to the developers.
Continue reading to learn about application restrictions and more.