+### DisabledCiphers
+Disable specific cryptographic ciphers.
+
+**Compatibility:** Firefox 76, Firefox ESR 68.8\
+**CCK2 Equivalent:** N/A\
+**Preferences Affected:** N/A
+
+#### Windows (GPO)
+```
+Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_DHE_RSA_WITH_AES_128_CBC_SHA = 0x1 | 0x0
+Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_DHE_RSA_WITH_AES_256_CBC_SHA = 0x1 | 0x0
+Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA = 0x1 | 0x0
+Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA = 0x1 | 0x0
+Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 = 0x1 | 0x0
+Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 = 0x1 | 0x0
+Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_RSA_WITH_AES_128_CBC_SHA = 0x1 | 0x0
+Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_RSA_WITH_AES_256_CBC_SHA = 0x1 | 0x0
+Software\Policies\Mozilla\Firefox\DisabledCiphers\TLS_RSA_WITH_3DES_EDE_CBC_SHA = 0x1 | 0x0
+```
+#### Windows (Intune)
+OMA-URI:
+```
+./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DisabledCiphers/DisabledCiphers_TLS_DHE_RSA_WITH_AES_128_CBC_SHA
+./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DisabledCiphers/DisabledCiphers_TLS_DHE_RSA_WITH_AES_256_CBC_SHA
+./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DisabledCiphers/DisabledCiphers_TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
+./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DisabledCiphers/DisabledCiphers_TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
+./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DisabledCiphers/DisabledCiphers_TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
+./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DisabledCiphers/DisabledCiphers_TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
+./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DisabledCiphers/DisabledCiphers_TLS_RSA_WITH_AES_128_CBC_SHA
+./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DisabledCiphers/DisabledCiphers_TLS_RSA_WITH_AES_256_CBC_SHA
+./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~DisabledCiphers/DisabledCiphers_TLS_RSA_WITH_3DES_EDE_CBC_SHA
+```
+Value (string):
+```
+<enabled/> or <disabled/>
+```
+#### macOS
+```
+<dict>
+ <key>DisabledCiphers</key>
+ <dict>
+ <key>TLS_DHE_RSA_WITH_AES_128_CBC_SHA</key>
+ <true/> | <false/>
+ <key>TLS_DHE_RSA_WITH_AES_256_CBC_SHA</key>
+ <true/> | <false/>
+ <key>TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA</key>
+ <true/> | <false/>
+ <key>TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA</key>
+ <true/> | <false/>
+ <key>TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256</key>
+ <true/> | <false/>
+ <key>TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256</key>
+ <true/> | <false/>
+ <key>TLS_RSA_WITH_AES_128_CBC_SHA</key>
+ <true/> | <false/>
+ <key>TLS_RSA_WITH_AES_256_CBC_SHA</key>
+ <true/> | <false/>
+ <key>TLS_RSA_WITH_3DES_EDE_CBC_SHA</key>
+ <true/> | <false/>
+ </dict>
+</dict>
+```
+#### policies.json
+```
+{
+ "policies": {
+ "DisabledCiphers" {
+ "TLS_DHE_RSA_WITH_AES_128_CBC_SHA": true | false,
+ "TLS_DHE_RSA_WITH_AES_256_CBC_SHA": true | false,
+ "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA": true | false,
+ "TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA": true | false,
+ "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256": true | false,
+ "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256": true | false,
+ "TLS_RSA_WITH_AES_128_CBC_SHA": true | false,
+ "TLS_RSA_WITH_AES_256_CBC_SHA": true | false,
+ "TLS_RSA_WITH_3DES_EDE_CBC_SHA": true | false
+ }
+ }
+}
+```
+### DisableDefaultBrowserAgent
+Prevent the default browser agent from taking any actions. Only applicable to Windows; other platforms don’t have the agent.
+
+**Compatibility:** Firefox 75, Firefox ESR 68.7 (Windows only)\
+**CCK2 Equivalent:** N/A\
+**Preferences Affected:** N/A
+
+#### Windows (GPO)
+```
+Software\Policies\Mozilla\Firefox\DisableDefaultBrowserAgent = 0x1 | 0x0
+```
+#### Windows (Intune)
+OMA-URI:
+```
+./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox/DisableDefaultBrowserAgent
+```
+Value (string):
+```
+<enabled/> or <disabled/>
+```
+#### policies.json
+```
+{
+ "policies": {
+ "DisableDefaultBrowserAgent": true | false
+ }
+}
+```