# FB8 behaving strangely (i.e. not working) under Windows 10
**URL:** https://www.finalbuilder.com/forums/t/fb8-behaving-strangely-i-e-not-working-under-windows-10/3627
**Category:** Bugs
**Created:** [April 7, 2016, 12:22pm UTC](https://www.finalbuilder.com/forums/t/fb8-behaving-strangely-i-e-not-working-under-windows-10/3627 "2016-04-07T12:22:40Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@ogiesen](https://www.finalbuilder.com/forums/u/ogiesen)
#### Post date: [April 7, 2016, 12:22pm UTC](https://www.finalbuilder.com/forums/t/fb8-behaving-strangely-i-e-not-working-under-windows-10/3627/1 "2016-04-07T12:22:40Z")
Hi!
Yesterday I moved from my old Windows 7 machine to a new development machine with Windows 10 and in the process did a fresh install of FinalBuilder 8. Under Windows 7 I had last been working with FinalBuilder 7. Now this new version is behaving very strangely: When trying to open my old fbp7 projects, FB simply displays a “Please wait a moment…” information popup with a progress bar for a few seconds which then disappears without the project having been loaded. The same thing happens when I try to create a new project or when I try to exit FinalBuilder. In fact, I can only close FinalBuilder via the Windows Task Manager. Every attempt to close it in a regular way just results in the “Please wait a moment” popup. It does not appear to make a difference whether I run FinalBuilder from an admin account or as a regular user.
As it is now, FinalBuilder is completely unusable on this machine. Oliver
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### Author:  [@nevar](https://www.finalbuilder.com/forums/u/nevar)
#### Post date: [April 8, 2016, 3:53am UTC](https://www.finalbuilder.com/forums/t/fb8-behaving-strangely-i-e-not-working-under-windows-10/3627/2 "2016-04-08T03:53:44Z")
This not what we are experiencing in our tests or on our vm installations of FinalBuilder 8 on Windows 10.
It sounds like there is an exception occurring when FinalBuilder 8 loads the FinalBuilder 7 projects. If this is the case then a “finalBuilder-bugreport.txt” exception log will be written to the %TEMP% directory. If there are number of them, please zip them and send the lot.
In addition to this I have some further questions to help understand what is occurring.
- Do you have an custom actions currently being used in FinalBuilder 7? Have they been moved to FinalBuilder 8 and had their serialisation field filled in through Action Studio?
- Is FinalBuilder 8 running with admin privileges?
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### Author:  [@ogiesen](https://www.finalbuilder.com/forums/u/ogiesen)
#### Post date: [April 8, 2016, 8:45am UTC](https://www.finalbuilder.com/forums/t/fb8-behaving-strangely-i-e-not-working-under-windows-10/3627/3 "2016-04-08T08:45:18Z")
Hi Jason,
thanks for responding. Where should I send the bugreport file?
In any case, I already took a look at it myself. Most of the exceptions logged are this:
> exception class : EOleSysError
> exception message : Class not registered, ClassID: {1829B7FE-CA4D-441C-9F52-BA60B59F138D}.
When I just open FB8 and then try to close it (without trying to open a project first) the log shows this:
> exception class : EOleSysError
> exception message : An outgoing call cannot be made since the application is dispatching an input-synchronous call, ClassID: {1829B7FE-CA4D-441C-9F52-BA60B59F138D}.
Looking directly at the registry, the ClassID mentioned in both messages is indeed not registered on either of the two machines. I cannot identify it.
I am not using any custom actions.
As I wrote, I already tried both from an admin account and with a regular user (which would be my preferred choice - although on the old machine my user account did indeed have local admin privileges). This does not appear to have an impact on the issue. I get the same behaviour with both users.
Cheers,
Oliver
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### Author:  [@nevar](https://www.finalbuilder.com/forums/u/nevar)
#### Post date: [April 11, 2016, 1:25am UTC](https://www.finalbuilder.com/forums/t/fb8-behaving-strangely-i-e-not-working-under-windows-10/3627/4 "2016-04-11T01:25:00Z")
Hi Oliver,
Thank you for the follow up information. If you could send the error report to our support email address [support@finalbuilder.com](mailto:support@finalbuilder.com) we will follow up there.