unable to start power bi desktop

[mur2za]

Hey guys, I've been using Power BI Desktop for months without issue, and then today it just won't start. I get the following error message when trying to launch the program (not even tried to open a .pbix file yet): "Unable to start Power BI Desktop - Could not load file or assembly". Detailed message attached.

I uninstalled and reinstalled the program (64 bit), but no use. Any ideas??

Thanks!

[prateekraina]

Hi,

If in case the accepted resolution doesn't work for you as it happened with me, follow these steps:

1. Close all instances of Power BI Desktop. Double check Task manager > Details. Kill any Power BI Desktop process.
2. Open Command Prompt and Ping Localhost.
3. If you get "General Failure" in the result, Turn your firewall off.
4. Open Power BI Desktop.

(TADA) 😄

Prateek Raina

[v-yuezhe-msft · Accepted solution]

Hi @mur2za,

Based on my research and verification, Microsoft.ReportingServices.ProgressiveProcessing.dll is located in %Program Files%\Microsoft Office\Office15\ADDINS\Power View Excel Add-in. And according to the above error message, the validation of the dll file is failed.

In your scenario, you can open the command prompt as administrator and enter the following command to disable the verification, then check if you can laugh Power BI Desktop successfully. For more details about the above error, please review this blog: https://blogs.msdn.microsoft.com/keithmg/2012/03/20/strong-name-validation-failed-exception-from-hre....

"C:\Program Files\Microsoft SDKs\Windows\v6.0A\Bin\x64\sn.exe" -Vr <dllpath>

There is also a similar thread for your reference.
http://stackoverflow.com/questions/403731/strong-name-validation-failed



Thanks,
Lydia Zhang

[mur2za]

Thank you @v-yuezhe-msft, that worked!!