microsoft / microsoft/WindowsAppSDK
Windows Update Broke PhiSilica
Nobody has claimed this yet.
- Dominant language
- C++
- Stars
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- Forks
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Description
After updating to the latest Windows Insider this morning, one of which included an update to the PhiSilica model:

I get this error:
```
System.UnauthorizedAccessException
HResult=0x80070005
Message=Access is denied.
Access is denied.
```
When doing either chat inference or embeddings:
```csharp
var result = await languageModel.GenerateResponseAsync(options, prompt);
var embeddingResult = await languageModel.GenerateEmbeddingVectorAsync(...);
```
Using v1.7.250127003-experimental3.
Right now, nothing works.
Contributor guide
No contributing guide indexed for this repository
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
No source file or test is identified. Start by reproducing both GenerateResponseAsync and GenerateEmbeddingVectorAsync with v1.7.250127003-experimental3 on the affected Windows Insider build, then trace the access-denied failure. Done means chat inference and embeddings work again without System.UnauthorizedAccessException.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- csharp
- Domain
- machine-learning, operating-systems
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 25/100