Could not load file or assembly 'System.Runtime.CompilerServices.Unsafe while refresh in service

[aibatalov]

Yesterday all working fine, but today refresh failed in all our reports in PowerBI service (we haven't changed reports since yesterday).

Same error in all reports:

An error happened while reading data from the provider: 'Could not load file or assembly 'System.Runtime.CompilerServices.Unsafe, Version=4.0.4.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)'

Reports contains PostgreSQL and web contents datasources.

What can we do to fix this?

[Nik93]

Are there any other solutions? Tried the below but still receive the same error...

[PakthurYangu]

I wasted a few days looking for a solution until I came across this article.

In short, you have to install version 4.0.10 of NpgSQL and when installing, select the NpgSQL GAC option. The article I linked has a more detailed step-by-step guide.

[PakthurYangu]

I wasted a few days looking for a solution until I came across this article.

In short, you have to install version 4.0.10 of NpgSQL and when installing, select the NpgSQL GAC option. The article I linked has a more detailed step-by-step guide.

[LinqLover]

The problem came back to us today after 3 years, any other known workarounds? We are hosting postgresql ourselves.

[shubhamamilkant]

Workaround for now: 

1) Install gateway (if not already installed)

2) Install PostgreSQL driver

3) Create a data source for PostgreSQL in gateway

4) Map data source to Dataset in the dataset settings page

[lguima]

Same issue here. 09/01/2021

[Anonymous]

Still running into this issue (8/30/2021)

[ysanabria]

Me too and still waiting for Microsoft support request 😥

[shubhamamilkant]

Same, I am still having this issue. 

any solutions? 

[grayl]

Same issue here running postgres via postgres for azure service.

[Anonymous]

Thanks MS for the fix,

But, hey! Since we all use Postgres, I want to make everyone aware of the TimescaleDB extension we have available. Timescale recently released v1.7, but as of v1.5 they implemented native database compression with a ratio of about 20:1. You can learn about it here.

Unfortunately, Azure's Postgres Service only supports v1.3.2 - please upvote this idea if you want to massively increase your PostgreSQL server's performance. If you're using a VM - get it already!

[LinqLover]

Update for everyone other who did not observe the service page: The issue has been fixed until last night. Postgres datasets updates works again. 🎉

[felipepereira]

This is unbelievable. It seems they are always trying to sabotage Postgres users. I am facing the same issue and it started on the same day.

[periyasingh]

Hi,

Same issue is coming for me too. The on-demand and scheduled data refresh in power bi server was working fine beforehand, now getting issue since monday. Still no issue in loading and refreshing data from the same source in Power BI desktop.

I am using postgresql azure PaaS database. The issue i am getting is :

An error happened while reading data from the provider: 'Could not load file or assembly 'System.Runtime.CompilerServices.Unsafe, Version=x.x.x.x, Culture=neutral, PublicKeyToken=xxxxxxxxxx' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)' 

[ysanabria]

I'm having the same issue, in power BI desktop work fine but in PBI Web not synchronize

An error happened while reading data from the provider: 'Could not load file or assembly 'System.Runtime.CompilerServices.Unsafe, Version=4.0.4.1, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)'

[moka]

Hi @aibatalov 

I just had the same problem because I was not using a Gateway Connection. 
I solved the problem by enabling a Gateway and installing npgsql v4.0.10 on it.

Hope it helps somehow!

[ALWI]

I got a call from Microsoft the issue is on the awareness list: https://powerbi.microsoft.com/en-us/support/

[tomkvarby]

Same issue here. No gateway. Can't see any data.

[Anonymous]

Same issue here, Postgresql DB on Azure server, no gateway, failing on all reports. All of them are either import-only or mixed-mode storage.

[Anonymous]

I have been experiencing the same problem for a few days. Hosting a Postgresql as a Database-as-a-service on Azure. Not using any gateway.