Questions tagged [schannel]
The schannel tag has no usage guidance.
16
questions with no upvoted or accepted answers
4
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0
answers
727
views
Schannel Error - Random
I'm currently experiencing an issue on a Windows Server 2012 R2.
In the event log is an Error for the Source "Schannel". The error description is:
"A fatal alert was generated and sent to the ...
- 41
4
votes
1
answer
142k
views
SChannel errors after enabling SSL on a Windows Server 2012 R2
I have a Windows Server 2012 R2 instance on Azure. For a new website I have ordered a certificate by GlobalSign. After getting the certificates from them I have completed the certificate request in ...
- 143
3
votes
0
answers
4k
views
SChannel "cannot find certificate in either LocalMachine or CurrentUser store"
We have an in-house application that requires the use of client SSL certificates to authenticate with a remote server (not under our control).
This has worked without problems before but on deploying ...
- 1,218
2
votes
1
answer
12k
views
Still suffering from Windows NPS May 2022 Certficate Update
in May 2022 Microsoft changed the way that client certificates are mapped to AD accounts, causing 802.1X EAP-TLS computer account authentication to stop working.
Here is an additional resource with ...
- 181
2
votes
0
answers
823
views
Left with 0 client certificates to choose from when moving SSRS service to TLS 1.2
Environment:
Reporting Services running on a SQL Server 2008 R2 SP3 installation on a Windows 2008 server with .Net 4.6.1 installed and .Net 3.5 enabled as feature. IIS, database and reporting ...
2
votes
1
answer
289
views
IIS 7.5 - SSL Fails After Reboot - Rebind Cert fixes until reboot
Recently, my IIS 7.5 SSL site started refusing connections after a reboot. Oddly, the issue can be workaround by binding the site with a different cert and the switching back to the correct one.
When ...
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1
vote
0
answers
6k
views
SChannel error: The following fatal alert was received: 80 error code 0x80090304
While investigating an issue where some customer requests are being unexpectedly rejected with HTTP 403, I noticed that the Windows event log contains a lot of these errors for source Schannel.
...
- 151
1
vote
1
answer
8k
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TONS of 4625 events. Failed login attempts. No IP, no username
I have a server that gets keeps getting failed login events (4625). They occur roughly every 20-30 minutes daily. Also appears to be on a schedule.
I've tried deleting stored credentials. ...
0
votes
1
answer
77
views
Should Ssl renegotiate messages be encrypted?
In RFC5246 it is not mentioned that Ssl renegotiate messages should be encrypted.
But when using Windows Schannel API I see that the renegotiate messages are encrypted.
I tried to send a crafted "...
- 101
0
votes
0
answers
2k
views
Domain Controller wont Replicate. SChannel issue. Clients cant join domain
I've got an issue with a PDC for a tree domain in our AD forest. It cannot replicate to the other DC's and it's clients are losing trust with the domain and cannot be reset using Test-...
- 71
0
votes
0
answers
1k
views
An unknown connection request was received from a remote client application, but none of the cipher ..... The SSL connection request has failed
I am getting too frequent errors in my System Error Logs :
An unknown connection request was received from a remote client
application, but none of the cipher suites supported by the client
...
0
votes
0
answers
2k
views
Using a third-party certificate with Active Directory without certificate request
The customer wants to use a COMODO signed TLS certificate for LDAPS on a Windows Server 2012 R2 domain contoller.
The certificate was already purchased but the CSR wasn't created on the domain ...
- 576
0
votes
1
answer
828
views
ADFS v3 on Windows Server 2012 R2 rejects SSLv3 requests
I faced an issue with ADFS v3 running on Windows Server 2012 R2
When client which is restricted to use SSLv3 only accesses the ADFS site url, the request fails.
The same thing works when using ...
- 1
0
votes
0
answers
4k
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Fatal schannel issue "A fatal alert was received from the remote endpoint. The TLS protocol defined fatal alert code is 51"
Recently working on a vps Windows 2012r2 server. Ran into a fatal schannel issue.
A fatal alert was received from the remote endpoint. The TLS protocol defined fatal alert code is 51.
Tracked this ...
- 14
-1
votes
1
answer
4k
views
Schannel Event ID 36888 and 36884 Certificate Error
I'm receiving the two following errors every ~60 seconds on a Windows 2008R2 SP1 Server running SQL Server 2008R2:
First:
Log Name: System
Source: Schannel
Date: 5/25/2016 9:23:...
-1
votes
1
answer
3k
views
TLS 1.0 handshake fails in Windows Server 2012 R2
I am using Windows Server 2012 R2 to contact AWS services, namely https://elasticbeanstalk.eu-central-1.amazonaws.com/. However, the AWS toolkit for Visual Studio as well as Internet Explorer 11 fail ...
