要解决ADFS CRM到SharePoint的问题，需要考虑以下几个方面：

1. 验证和授权：确保ADFS正确配置并与CRM和SharePoint集成。这包括在ADFS服务器上配置Relying Party Trust以允许CRM和SharePoint访问ADFS。以下是一个示例代码片段，说明如何配置ADFS Relying Party Trust：

Add-PSSnapin Microsoft.Adfs.PowerShell

$stsUrl = "https://adfs.example.com/adfs/services/trust"
$crmUrl = "https://crm.example.com"
$sharePointUrl = "https://sharepoint.example.com"

$relyingPartyName = "CRM"
$relyingPartyIdentifier = "urn:crm.example.com"
$tokenLifetime = (New-TimeSpan -Hours 8)

$crmRP = Get-AdfsRelyingPartyTrust -Name $relyingPartyName -ErrorAction SilentlyContinue
if ($crmRP -eq $null) {
    $crmRP = New-AdfsRelyingPartyTrust -Name $relyingPartyName -Identifier $relyingPartyIdentifier -TokenLifetime $tokenLifetime
}

$crmRP | Set-AdfsRelyingPartyTrust -IssuanceTransformRules '@RuleTemplate = "PassThroughClaims"'

$crmRP | Add-AdfsRelyingPartyTrustIssuer -TrustedIssuerName "CRM" -TrustedIssuerUri $crmUrl

$crmRP | Add-AdfsRelyingPartyTrustEndpoint -Binding POST -Protocol WSFederation -Uri "$crmUrl/XRMServices/2011/Organization.svc"

$crmRP | Set-AdfsRelyingPartyTrust -WsFedEndpoint $stsUrl

$crmRP | Set-AdfsRelyingPartyTrust -IssuanceAuthorizationRules '@RuleTemplate = "AllowAllAuthzRule"'

$sharePointRP = Get-AdfsRelyingPartyTrust -Name "SharePoint" -ErrorAction SilentlyContinue
if ($sharePointRP -eq $null) {
    $sharePointRP = New-AdfsRelyingPartyTrust -Name "SharePoint" -Identifier "urn:sharepoint.example.com" -TokenLifetime $tokenLifetime
}

$sharePointRP | Set-AdfsRelyingPartyTrust -IssuanceTransformRules '@RuleTemplate = "PassThroughClaims"'

$sharePointRP | Add-AdfsRelyingPartyTrustIssuer -TrustedIssuerName "SharePoint" -TrustedIssuerUri $sharePointUrl

$sharePointRP | Set-AdfsRelyingPartyTrust -WsFedEndpoint $stsUrl

$sharePointRP | Set-AdfsRelyingPartyTrust -IssuanceAuthorizationRules '@RuleTemplate = "AllowAllAuthzRule"'

2. 跨域问题：如果CRM和SharePoint位于不同的域或子域上，需要确保在SharePoint服务器上启用跨域资源共享（CORS）。以下是一个示例代码片段，展示如何配置SharePoint的Web.config文件以启用CORS：

3. 授权访问：在CRM和SharePoint之间进行身份验证并授权访问。可以使用OAuth 2.0或基于令牌的身份验证机制。以下是一个示例代码片段，演示如何使用OAuth 2.0进行身份验证并获取访问令牌：

using Microsoft.IdentityModel.Clients.ActiveDirectory;

string authority = "https://login.microsoftonline.com/{tenant_id}";
string clientId = "{client_id}";
string clientSecret = "{client_secret}";
string resource = "{crm_resource}";

AuthenticationContext authenticationContext = new AuthenticationContext(authority);
ClientCredential clientCredential = new ClientCredential(clientId, clientSecret);
AuthenticationResult authenticationResult = authenticationContext.AcquireTokenAsync(resource, clientCredential).Result;

string accessToken = authenticationResult.AccessToken;

这些解决方法应该有助于解决ADFS CRM到SharePoint的问题。但请注意，具体的实施细节可能会根据您的环境和需求而有所不同。