1 Topic by juanpablopwr

  • juanpablopwr
  • Member
  • Offline
  • Registered: 2014-04-25
  • Posts: 25

Topic: Windows 7 + Office 2016 not working!

==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release):  1.7.1
- Deployed with iRedMail Easy or the downloadable installer?
- Linux/BSD distribution name and version: Debian 12
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Web server (Apache or Nginx): Apache
- Manage mail accounts with iRedAdmin-Pro? YES
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

Hi!
Recently the server was changed to the latest version of Debian and iReadmail, this caused some workstations with Windows 7 and Office 2016 to stop connecting, giving an encryption error, I tried connecting via IMAP, POP3, IMAP and POP3 SSL, TLS, automatic and it doesn't connect. Could it be an incompatibility because Windows and Office are so old?

----

Spider Email Archiver: On-Premises, lightweight email archiving software developed by iRedMail team. Supports Amazon S3 compatible storage and custom branding.

2 Reply by ZhangHuangbin

  • ZhangHuangbin
  • ZhangHuangbin
  • iRedMail Developers
  • Offline
  • Registered: 2009-05-06
  • Posts: 31,146

Re: Windows 7 + Office 2016 not working!

It might be caused due to old Windows + Office doesn't support TLSv1.2 / 1.3.
You can try to enable TLSv1, TLSv1.1 in Postfix and Dovecot and test again.

3 Reply by juanpablopwr

  • juanpablopwr
  • Member
  • Offline
  • Registered: 2014-04-25
  • Posts: 25

Re: Windows 7 + Office 2016 not working!

What files or lines should I edit?

4 Reply by juanpablopwr

  • juanpablopwr
  • Member
  • Offline
  • Registered: 2014-04-25
  • Posts: 25

Re: Windows 7 + Office 2016 not working!

I found the solution without having to activate anything old on the server. Applying this change in any version of windows 7 with any version of outlook, it works perfectly.

For TLS 1.1

Registry location: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.1\Client
DWORD name: DisabledByDefault
DWORD value: 0

For TLS 1.2

Registry location: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.2\Client
DWORD name: DisabledByDefault
DWORD value: 0

5 Reply by ZhangHuangbin

  • ZhangHuangbin
  • ZhangHuangbin
  • iRedMail Developers
  • Offline
  • Registered: 2009-05-06
  • Posts: 31,146

Re: Windows 7 + Office 2016 not working!

Thanks for sharing. smile