Chat about the Sitecore User Group Poland

I recently had a chance to chat with Nicole Montero of Sitecore about Sitecore Polish User Group that I am running with other great folks and MVPs from our region.

I adding it as a blog post to make sure that those who follow my activities here, will not overlook it.

You can read the story behind the Sitecore User Group Poland here: – A conversation with Poland Sitecore User Group Organizer, Łukasz Skowroński – Sitecore Community

Sitecore and ERR_SSL_KEY_USAGE_INCOMPATIBLE error in the browser – Windows 11

Recently I had to install Sitecore 9 on my local environment and when finally I managed to do it I noticed that I cannot access my websites locally.

I started searching for the solution – I thought that maybe something is wrong with the certs and they were generated incorrectly by the older PowerShell scripts – but I was wrong.

The reason was an added support for TLS 1.3 in Windows 11 (that includes IIS of course).

The fix was really easy and I found it here: Sitecore – Running Sitecore on Windows 11 ( The only difference is that I had a different error message.

To make your website work in your browser you just need to settings of your website in the IIS and disable TLS 1.3 for it:

When you check it to disable the TLS 1.3 support – restart your website and you’re good to go.

Convert JKS file to PKCS12 to connect Sitecore and Salesforce

Salesforce uses JKS files to store information about the valid certificates used for API communication. The challenge is that JKS is not a format very common in the .net applications – we more often use certs in PKCS12 format.

How to convert JKS file to PKCS12 file?

Before you start conversion it is good to verify if JKS file contains only one certificate – the one you need. To verify what is inside the JKS file you can use “KeyStore Explorer” application that you can download here.

When you open the JKS file with KeyStore Explorer you will see something like this:

When you are sure that that JKS file contains only one cert you can start conversion. For conversion, you will need access to the keytool that usually is available in the OpenJDK directory.

In my case the keytool is available in the path:
C:\Program Files\ojdkbuild\java-1.8.0-openjdk-\bin\keytool.exe

When you find the keytool you can run the following command to convert jks into pkcs12 file:

C:\Program Files\ojdkbuild\java-1.8.0-openjdk-\bin\keytool.exe' -importkeystore -srckeystore xxxxxxxxxxxxxx.jks -destkeystore xxxxxxxxxxxxxx.p12 -srcstoretype JKS -deststoretype PKCS12

Just replace “xxxxxxxxxxxxxx” file name of you jks file and the name of the p12 that should be generated.

If everything went fine you can now use your cert in a new format to sign data that you send to Salesforce. More info about that you will find in the article “Sitecore and Salesforce custom integration – Salesforce JWT bearer token generation

Sitecore and Salesforce custom integration – Salesforce JWT bearer token generation

In this post I will explain my approach to the Salesforce – Sitecore integration. In fact code that is going to be described here can be used in almost every .net application.

Available Sitecore – Salesforce integration

Sitecore provides an integration to everyone who needs to synchronize the data between the Sitecore and Salesforce – the “Salesforce Connect” extension.

You can download it here:

If you do not know which version you should install, check it here (comatibility table):

The natural question that probably comes to your mind right now is ‘why did not I use it when I had a need to connect to salesforce’ – this is a really good question.

The answer is – because available extension is focused on the syncing contacts between Salesforce and Sitecore, when in our case we just wanted to send some data to Salesforce and the synchronization was being made on the different level.

In other words, available extension did not meet our needs.

Few general words about the integration

Integration with Salesforce is not in any kind special – it is just an API that is managed by the Salesforce developers. An endpoints and parameters can differ but the common thing is token generation that I decided to describe in this post because it took me a while to understand how to generate the correct JWT bearer token that will be honored by the Salesforce endpoint.

Documentation about it is available on the Salesforce help portal :

Documentation contains the Java code that I had to transform into .NET one what sometimes was not so obvious.

What do you need to generate OAuth 2.0 JWT bearer token

To make communication possible you must have generated certificate that is going to be used by Salesforce and your Sitecore instance. When certificate will be installed on the Salesforce side you can continute configuration on your side.

To generate the JWT token you need to gather the following information:

  • iss – this is OAuth client_id (provided by Salesforce)
  • aud – this is authorization server’s url ( for production and for test environments – provided by Salesforce)
  • sub – the username of account used to connect to salesforce (usually email – provided by Salesforce)
  • exp – timestamp of the expiration (provided by Salesforce)

Generation process

All of that data need to be later encoded to base64 string:

private string GenerateClaimsString()
var iss = this._salesforceConfigurationService.GetJwtClaimsIss();
var sub = this._salesforceConfigurationService.GetJwtClaimsSub();
var aud = this._salesforceConfigurationService.GetJwtClaimsAud();
var exp = this._salesforceConfigurationService.GetJwtClaimsExp();
var claims = $"{{\"iss\": \"{iss}\", \"sub\": \"{sub}\", \"aud\": \"{aud}\", \"exp\": \"{exp}\"}}";
return this.Base64Encoder(claims);

But it is not only encoding by the standard Convert.ToBase64String method. We must also remove some of the chars from the generated string:

private string Base64Encoder(string valueToEncode)
byte[] valueToEncodeAsBytes = System.Text.Encoding.UTF8.GetBytes(valueToEncode);
return Convert.ToBase64String(valueToEncodeAsBytes).TrimEnd('=').Replace('+', '-').Replace('/', '_');

When the values are encoded and unwanted chars are removed from the encoded string we need to add to it predefined JWT header. Header has a very similar structure to the claims and can be hardcoded with value:


Here is the code that can do that:

private string GenerateJwtHeaderString()
var headerValue = SalesforceConstants.Api.Values.Header;
return this.Base64Encoder(headerValue);

After all operations we have two strings that we can use to build the assertion used later in the authorization request.

var assertion = this.GenerateJwtHeaderString();
assertion += ".";
assertion += this.GenerateClaimsString();

As you can see two strings are again connected with the dot sign.

But this is not the end – now we are going to use our certificate to sign the assertion. Full code of assertion generation will look like this:

var assertion = this.GenerateJwtHeaderString();
assertion += ".";
assertion += this.GenerateClaimsString();
this._assertion = assertion + "." + this.SignAndGeneratePayloadString(assertion);

Where SignAndGeneratePayloadString method looks like this:

private string SignAndGeneratePayloadString(string payload)
            X509Certificate2 certificate = new X509Certificate2(this._salesforceConfigurationService.GetCertPath(), this._salesforceConfigurationService.GetCertPass(), X509KeyStorageFlags.MachineKeySet | X509KeyStorageFlags.PersistKeySet | X509KeyStorageFlags.Exportable);
            using (var privateKey = certificate.GetRSAPrivateKey())
                var signedData = privateKey.SignData(System.Text.Encoding.UTF8.GetBytes(payload), HashAlgorithmName.SHA256, RSASignaturePadding.Pkcs1);
                return Convert.ToBase64String(signedData).TrimEnd('=').Replace('+', '-').Replace('/', '_');

As you may noticed SignAndGeneratePayloadString method uses certificate to ‘sign’ the assertion data – to make it work you need to load the certificate from the disk (it must be p12 certificate file) and have certificate password to read it.

The result of signing is again concatenated with the dot and original assertion data.

When the assertion is finally ready, you can authenticate with Salesforce API and Request Access Token for further Salesforce communication.


If you compare implementation from this blog post with implementation from the Salesforce’s help page you will notice few major differences like:

  • usage of p12 certificate file instead of jks
  • additional string operations on the generated/encoded string values

If you want you can check the full implementation here:

Because transition from JKS file to p12 file can be also tricky, I will describe it in the another blog post that is going to be published soon – stay tuned!

Low performance of Sitecore Experience Editor – SC 10

One of the customers had Sitecore 10 initial release installed on Production – everything was working fine till they started adding many new languages and visibility rules to the content they create – in other words they have started to use Sitecore XP in full scale, with personalization etc.

At the beginning everything was working fast and smothly but after few more languages and few more rules added, everything slowed down and editors had to wait aroud 30-60 seconds to load Sitecore Experience Editor and sometimes more complex pages were even able to stop the IIS.

There are at least few well known tweaks that can be applied to improve Experience Editor performance, majority of them are listed on the Sitecore.StackExchange :

I had an ‘opportunity’ to found another case that later was identified by Sitecore Support as known issue with fix number: SC Hotfix 530937-1 (please contact Sitecore Support to get code of it).

Explanation of the issue

Sitecore has very advanced mechanisms checking what exactly should be shown to the visitor and when. Some of the checks are:

  • check of the date and time when component should be shown
  • check of the personalization rules when component should be shown
  • check of user permissions to display/change every component

As you see I emphasize ‘component’ in every aboves point – I do that because complex pages with many components have to run those checks so many more times to show you the page that it significantly increase time of page loading in the experience editor – where you do not have cache enabled.

I was debugging for a while and found this tool as the source of low performance:

It allows to change the date and verify how the website would looks like for certain date – with all applied rules/filters.

The tool seems to use Sitecore.Pipelines.FilterItem.GetPublishedVersionOfItem, Sitecore Kernel processor to prepare data to display it in the experience editor.

I replaced this processor with my one to verify how many times it is called and what operations are being made there and I was shocked with hundreds of requests and checks that are triggered by this processor.

I decided to remove it from the pipeline with code:

<processor type="Sitecore.Pipelines.FilterItem.GetPublishedVersionOfItem, Sitecore Kernel" resolve="true">
    <patch:delete />

And after the patch was applied I immediately noticed that Experience Editor has started to load quickly again (I mean as fast as it is possible for Experience Editor – around 5s).

So, if you also experience very low Experience Editor performance you can try to apply that change and check if it helped – if yes, then I would suggest to contact Sitecore Support and get the official patch.