SLO Request Failed In Azure

[ehabAbdelMawla]

I have a MultiSamlStrategy implementation with saml factory

	GetSamlConfiguration(config, accountKey, clientRedirectUrl) {
		return {
			entryPoint: config.SamlEntryPointUrl,
			signatureAlgorithm: 'sha256' as SignatureAlgorithm,
			issuer: config.SamlIssuer,
			idpCert: config.SamlCertificate,
			callbackUrl: this.GetCallBackUrl(accountKey, clientRedirectUrl),
			wantAssertionsSigned: true,
			wantAuthnResponseSigned: false
		};
	}
	onModuleInit() {
		passport.use(
			new MultiSamlStrategy(
				{
					passReqToCallback: true,
					getSamlOptions: async (req: any, Done) => {
						try {
							const { accountKey, clientRedirectUrl } = req.query;
							console.log('getSamlOptions', { accountKey, clientRedirectUrl });
							const config = await this.GenericRepository.GetAccountSsoConfigByKey(accountKey);
							if (!(config && config.SsoType == SsoTypes.SAML)) {
								throw new SsoException(ErrorCodesEnum.SSO_CONFIGURATION_NOT_FOUND);
							}
							return Done(null, this.GetSamlConfiguration(config, accountKey, clientRedirectUrl));
						} catch (error) {
							return Done(new SsoException(ErrorCodesEnum.SSO_CONFIGURATION_NOT_FOUND), null);
						}
					}
				},
				function (Req, Profile, Done) {
					return Done(null, {
						email: Profile.nameID
					});
				},
				null
			)
		);
	}

	logout(req: any, res: any) {
		(passport as any)._strategy('saml').logout(req, function (err, logoutUrl) {
			if (err) {
				console.log({ err });
				return res.status(500).send('Error during logout');
			}

			console.log({ logoutUrl });
			return res.redirect(logoutUrl);
		});
	}

but i get following error in Microsoft
AADSTS7500525: There was an XML error in the SAML message at line 1, position 445. Verify that the XML content of the SAML messages conforms to the SAML protocol specifications.

[ehabAbdelMawla]

[markstos]

If you believe that node-saml / passport-saml is generating invalid XML add logging that captures the XML and review it and describe what's happening around line 1, position 445 that looks like a bug in passport-saml.